Configuration

Overview

The HUMAN enforcer can be configured within the JavaScript code via the HumanSecurityConfiguration object.

HumanSecurityConfiguration

An object of configuration values that dictate the behavior of the Enforcer. This object is needed when creating a new Enforcer instance.

Required values:

• px_app_id
• px_auth_token
• px_cookie_secret

📘

Using Dictionary or ConfigStore

You can store your HUMAN configuration in a Fastly Dictionary or Config Store and access it from the JavaScript code using the ConfigStore or Dictionary classes. Note that these classes cannot be accessed outside of the request handler.

px_app_id

The application ID. Required to initialize the Enforcer.

const config: HumanSecurityConfiguration = {
    // ...
    px_app_id: '<APP_ID>',
    // ...
}

px_auth_token

The token used for authorization with the HUMAN backend. Required to initialize the Enforcer.

const config: HumanSecurityConfiguration = {
    // ...
    px_auth_token: '<AUTH_TOKEN>',
    // ...
}

px_cookie_secret

The secret used to encrypt and decrypt the risk cookie. Required to initialize the Enforcer.

const config: HumanSecurityConfiguration = {
    // ...
    px_cookie_secret: '<COOKIE_SECRET>',
    // ...
}

Cookie secret rotation:

In case you would like to generate and use a new cookie secret, the enforcer will have to support both old and new cookie secrets to avoid multiple 'cookie decryption failed' errors. In your configuration, adjust the px_cookie_secret value to be an array of strings, that includes both the new cookie secret and the old cookie secret. The new cookie secret should be the first value in the new array.

const config: HumanSecurityConfiguration = {
    // ...
    px_cookie_secret: ['<NEW_COOKIE_SECRET>', '<OLD_COOKIE_SECRET>'],
    // ...
}

🚧

Note

The new cookie secret should be the first value in the new array. Array size is limited to 2 cookie secrets.

px_module_enabled

This boolean serves as an on/off switch for the entire module, providing a way to enable and disable all Enforcer capabilities quickly and easily.

Default: true

const config: HumanSecurityConfiguration = {
    // ...
    px_module_enabled: false,
    // ...
}

px_module_mode

This feature controls the behavior of the enforcer by changing how it executes certain parts of the workflow. Most notably, different modes allow for analysis and fine-tuning of the enforcer behavior without serving block pages that affect end users.

Possible values:

• "monitor" - the enforcer will perform all functions without returning block responses
• "active_blocking" - the enforcer will return block responses when needed

Default: "monitor"

const config: HumanSecurityConfiguration = {
    // ...
    px_module_mode: 'active_blocking',
    // ...
}

px_logger_severity

The verbosity of the logs generated by the enforcer.

Possible values:

• "none" - No logs will be generated
• "error" - Sparse logs will be generated only when errors occur
• "debug" - Detailed logs will always be generated (not advisable for production environments)

Default: "error"

const config: HumanSecurityConfiguration = {
    // ...
    px_logger_severity: 'debug',
    // ...
}

px_s2s_timeout

The maximum time in milliseconds to wait for the risk API request. If this timeout is reached, the original request will be allowed to pass (fail open).

Default: 1000

const config: HumanSecurityConfiguration = {
    // ...
    px_s2s_timeout: 2000,
    // ...
}

🚧

Note

This value must be configured as the first byte timeout for the human_sapi backend in the Fastly service to take effect.

px_ip_headers

By default, the IP is taken from the event.client.address value. However, if this value is inaccurate, the enforcer can extract the IP from the headers configured here. The headers are traversed in the order they are listed. The first header value that exists will be used as the client IP.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_ip_headers: ['true-ip', 'true-client-ip'],
    // ...
}

px_advanced_blocking_response_enabled

In specific cases (e.g., XHR post requests), a full captcha page render might not be an option. In such cases the advanced blocking response returns a JSON object containing all the information needed to render a customized captcha challenge implementation - be it a popup modal, a section on the page, etc. This allows for flexibility and customizability in terms
of how the captcha pages are displayed.

Default: true

const config: HumanSecurityConfiguration = {
    // ...
    px_advanced_blocking_response_enabled: false,
    // ...
}

px_first_party_enabled

To prevent suspicious or unwanted behavior on the client side, some browsers or extensions (e.g., adblockers) may deny the frontend JavaScript code from making requests to other domains. This prevents the HUMAN sensor from making requests to the HUMAN backends, which greatly limits HUMAN's detection capabilities. To avoid this problem, first party enables the enforcer to be used as a proxy for HUMAN servers, and to serve content to the browser from a first party endpoint (i.e., an endpoint on the customer’s domain).

Default: true

const config: HumanSecurityConfiguration = {
    // ...
    px_first_party_enabled: false,
    // ...
}

px_custom_first_party_prefix

By default, first party endpoints always begin with the application ID without the initial "PX". For example, if the application ID is PX12345678, then all first party routes will take the form /12345678/*. This configuration sets a custom prefix for first party routes to use in addition to the default prefix. When configured, the enforcer will respond to first party requests with endpoints matching the patterns /<px_custom_first_party_prefix>/init.js, /<px_custom_first_party_prefix>/xhr/*, and /<px_custom_first_party_prefix>/captcha/*.

Default: "" (when empty, will use the default as described above)

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_first_party_prefix: "/custom-prefix",
    // ...
}

px_custom_first_party_sensor_endpoint

For an application with ID PX12345678, the first party sensor endpoint is /12345678/init.js by default. This configuration customizes the entire first party sensor script endpoint. Note that in addition to responding to requests that match this configured route, the enforcer will also proxy first party requests that match the default pattern (/12345678/init.js) and patterns according to the custom prefix (/<px_custom_first_party_prefix>/init.js) if one is configured.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_first_party_sensor_endpoint: "/human_sensor",
    // ...
}

px_custom_first_party_xhr_endpoint

For an application with ID PX12345678, the first party XHR endpoint is /12345678/xhr by default. This configuration customizes the first party XHR endpoint. Note that in addition to responding to requests that match this configured route, the enforcer will also proxy first party requests that match the default pattern (/12345678/xhr/*) and patterns according to the custom prefix (/<px_custom_first_party_prefix>/xhr/*) if one is configured.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_first_party_xhr_endpoint: "/human_xhr",
    // ...
}

px_custom_first_party_captcha_endpoint

For an application with ID PX12345678, the first party captcha endpoint is /12345678/captcha by default. This configuration customizes the first party captcha endpoint. Note that in addition to responding to requests that match this configured route, the enforcer will also proxy first party requests that match the default pattern (/12345678/captcha/*) and patterns according to the custom prefix (/<px_custom_first_party_prefix>/captcha/*) if one is configured.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_first_party_captcha_endpoint: "/human_captcha",
    // ...
}

px_bypass_monitor_header

When enabling the enforcer for the first time, it is recommended to do so in monitor mode to collect data before actually starting to block user requests. Prior to switching the module mode to active_blocking entirely, it's also crucial to verify that the full blocking flow works as expected. This feature activates the full blocking flow even while in monitor mode if a particular header is present on the request.

Default: "x-px-block"

const config: HumanSecurityConfiguration = {
    // ...
    px_bypass_monitor_header: 'x-bypass-monitor',
    // ...
}

px_enforced_routes

Customers may want certain, but not all, endpoints to be enforced by HUMAN, even when the Enforcer is in monitor mode. These routes will go through the full enforcer workflow, including blocking requests when necessary. That is, even when the enforcer is in monitor mode, these defined routes will behave as if in active blocking mode.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_enforced_routes: ['/enforced_route'],
    // ...
}

px_custom_is_enforced_request

📘

This configuration is meant for cases that require more complex custom logic. It is recommended to use the px_enforced_routes configuration for simpler cases.

Customers may want certain, but not all, endpoints to be enforced by HUMAN, even when the Enforcer is in monitor mode. This configurable function provides a way to define which requests should be enforced based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be enforced (the request will behave as if in active blocking mode) or not.

• Parameters
  • request: Request
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_is_enforced_request: (request: Request): boolean | Promise<boolean> => {
        return request.method === 'POST' && request.url.includes('/enforced_route');
    },
    // ...
}

px_monitored_routes

Enables certain endpoints to be monitored rather than enforced by HUMAN, even when the enforcer is in active blocking mode.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_monitored_routes: ['/monitored_route'],
    // ...
}

px_custom_is_monitored_request

📘

This configuration is meant for cases that require more complex custom logic. It is recommended to use the px_monitored_routes configuration for simpler cases.

Customers may want certain, but not all, endpoints to be monitored by HUMAN, even when the Enforcer is in active_blocking mode. This configurable function provides a way to define which requests should be monitored based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be monitored (the request will behave as if in monitor mode) or not.

• Parameters
  • request: Request
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_is_monitored_request: (request: Request): boolean | Promise<boolean> => {
        return request.method === 'GET' && request.url.includes('/monitored');
    },
    // ...
}

px_sensitive_headers

The HUMAN detector requires information about the HTTP request as part of its bot detections. Certain headers may contain information that should not be forwarded to other servers, including the HUMAN backend. Configuring these header names as sensitive headers will remove these headers from requests sent to other backends by HUMAN.

Default: ["cookie", "cookies"]

const config: HumanSecurityConfiguration = {
    // ...
    px_sensitive_headers: ['x-sensitive-token'],
    // ...
}

px_sensitive_routes

Certain endpoints may require more stringent protection from bot attacks (e.g., endpoints that execute payments or handle personal information). In these cases, routes can be configured as sensitive routes, meaning risk API calls will be made even if the request contains a valid, unexpired cookie.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_sensitive_routes: ['/login', '/checkout'],
    // ...
}

px_custom_is_sensitive_request

📘

This configuration is meant for cases that require more complex custom logic. It is recommended to use the px_sensitive_routes configuration for simpler cases.

Requests can be configured as sensitive, meaning risk API calls will be made even if the request contains a valid, unexpired cookie. This configurable function provides a way to define which requests should be considered sensitive based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be considered sensitive or not.

• Parameters
  • request: Request
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_is_sensitive_request: (request: Request): boolean | Promise<boolean> => {
        return request.method === 'POST' || request.method === 'PUT';
    },
    // ...
}

px_filter_by_extension

HUMAN does not enforce static assets such as images and documents. To prevent unnecessary API calls to HUMAN servers and needless computation, the enforcer filters all requests with a valid static file extension. Filtering by extension only applies to HTTP requests with methods GET and HEAD.

Default: [ '.css', '.bmp', '.tif', '.ttf', '.docx', '.woff2', '.js', '.pict', '.tiff', '.eot', '.xlsx', '.jpg', '.csv', '.eps', '.woff', '.xls', '.jpeg', '.doc', '.ejs', '.otf', '.pptx', '.gif', '.pdf', '.swf', '.svg', '.ps', '.ico', '.pls', '.midi', '.svgz', '.class', '.png', '.ppt', '.mid', '.webp', '.jar', '.json', '.xml' ]

const config: HumanSecurityConfiguration = {
    // ...
    px_filter_by_extension: ['.css', '.js', '.png'],
    // ...
}

px_filter_by_http_method

Filters out requests according to their HTTP method, avoiding unnecessary traffic in the enforcer verification flow and reducing operating costs.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_filter_by_http_method: ['OPTIONS'],
    // ...
}

px_filter_by_ip

Filters out requests according to their IP address, avoiding unnecessary traffic in the enforcer verification flow and reducing operation costs.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_filter_by_ip: ['1.1.1.1', '2.2.2.2/8'],
    // ...
}

px_filter_by_route

Route prefixes (endpoints) specified here will not be blocked, regardless of the score they receive. A request to a filtered route will not generate any risk or async activities.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_filter_by_route: ['/filtered_route'],
    // ...
}

px_filter_by_user_agent

Filters out requests according to their user agent value, avoiding unnecessary traffic in the enforcer verification flow and reducing operation costs.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_filter_by_user_agent: ['filtered_UA'],
    // ...
}

px_custom_is_filtered_request

📘

This configuration is meant for cases that require more complex custom logic. It is recommended to use the px_filter_by_route, px_filter_by_user_agent, px_filter_by_http_method, px_filter_by_ip, and px_filter_by_extension configurations for simpler cases.

Customers may prefer to filter certain requests (i.e., not apply HUMAN enforcement at all). These requests will not be blocked, and they will not generate any risk or async activities. This configurable function provides a way to define which requests should be filtered based on custom logic. The function accepts the incoming request as an argument and returns a boolean indicating whether the request should be filtered or not.

• Parameters
  • request: Request
• Returns a boolean (or a Promise resolving to a boolean)

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_is_filtered_request: (request: Request): boolean | Promise<boolean> => {
        return request.method === 'GET' && request.url.includes('/static/');
    },
    // ...
}

px_css_ref

Provides a way to include an additional custom .css file to add to the block page.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_css_ref: 'https://www.example.com/custom_style.css',
    // ...
}

px_js_ref

Provides a way to include a custom JS script to add to the block page. This script will run after the default JS scripts.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_js_ref: 'https://www.example.com/custom_script.js',
    // ...
}

px_custom_logo

Adds a custom logo to the block page that will be shown to users. This aligns the block page with the customer's brand.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_logo: 'https://www.example.com/custom_logo.png',
    // ...
}

px_custom_cookie_header

The Enforcer attempts to extract the HUMAN cookies from the 'Cookie' header. If the HUMAN cookies are transferred on a header other than 'Cookies', the header name should be configured here.

Default: "x-px-cookies"

const config: HumanSecurityConfiguration = {
    // ...
    px_custom_cookie_header: 'x-custom-cookies',
    // ...
}

px_user_agent_max_length

🚧

This value should not be changed without consulting with the HUMAN Customer Success team.

The maximum length of the User-Agent header. If the user agent header value exceeds this length, it will be truncated to this length prior to processing.

Default: 8528

const config: HumanSecurityConfiguration = {
    // ...
    px_user_agent_max_length: 2048,
    // ...
}

px_secured_pxhd_enabled

Whether the PXHD cookie set on the HTTP response should include the Secure attribute.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_secured_pxhd_enabled: true,
    // ...
}

px_cors_support_enabled

CORS (Cross-Origin Resource Sharing) is a mechanism that enables the server to indicate when a request contains cross-origin resources. It does so by adding special HTTP headers to the request, which permits the browser to load these resources. Without these headers, the browser may block requests to these resources for security reasons.

In most cases, CORS employs a two-stage procedure with a preliminary "preflight" request followed by the actual request. The preflight request checks if the actual request will be responded to. To learn more about different request types, see these examples.

In the Enforcer, CORS behavior must be configured to address both simple requests (without preflight) and more complex ones (with preflight). Enabling CORS support via this configuration will have the following effects:

• It will automatically add the following default CORS response headers to block responses resulting from CORS requests.

Access-Control-Allow-Origin: <ORIGIN_REQUEST_HEADER_VALUE>
Access-Control-Allow-Credentials: true

• It will activate the px_cors_create_custom_block_response_headers configuration, which will allow for customizing the block response headers via a custom function.
• It will activate the px_cors_preflight_request_filter_enabled and px_cors_custom_preflight_handler configurations, which allow for filtering and custom handling of preflight requests.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_cors_support_enabled: true,
    // ...
}

px_cors_create_custom_block_response_headers

If the default CORS response headers are not sufficient, this configuration can be used to completely customize the headers that should be added to all block responses resulting from CORS requests. If this function is defined, the default headers will not be added; only those headers specified in the returned object will be added to the block response.

• Parameters
  • request: Request
• Returns an object of the type Record<string, string[]> (or a Promise resolving to this type)

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_cors_create_custom_block_response_headers: (
        request: Request,
    ): Record<string, string[]> => {
        return {
            'Access-Control-Allow-Origin': [request.headers.get('origin')],
            'Access-Control-Allow-Credentials': ['false'],
            'Access-Control-Allow-Methods': ['GET', 'POST', 'PUT'],
            'X-Custom-Header': ['1']
        };
    },
    // ...
}

px_cors_preflight_request_filter_enabled

This configuration disables enforcement for CORS preflight requests. When this configuration is set to true, CORS preflight requests will be filtered from the enforcer flow. That is, they will pass through the enforcer flow without triggering detection or block responses.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_cors_preflight_request_filter_enabled: true,
    // ...
}

px_cors_custom_preflight_handler

If a more customized approach is needed for handling CORS preflight requests, this custom function can be set to define the desired behavior. The custom function should receive the original HTTP request and return an object representing the HTTP response to be returned. If null or any other falsy value is returned from the function, the Enforcer will continue processing the preflight request.

📘

Custom Preflight Handler and Preflight Request Filtering

The px_cors_custom_preflight_handler will be invoked prior to determing whether or not to filter the request based on the px_cors_preflight_request_filter_enabled configuration. This allows for returning customized responses for preflight requests that meet certain conditions and filtering those that don't meet these conditions.

• Parameters
  • request: Request
• Returns either null or an object implementing the IMinimalResponse interface (defined below). It is also possible to return a Promise resolving to one of these types.

interface IMinimalResponse {
    status: number;
    headers: Record<string, string[]>;
    body: any;
};

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_cors_custom_preflight_handler: (request: Request): IMinimalResponse | Promise<IMinimalResponse> => {
        const headers = {
            'Access-Control-Allow-Origin': [request.headers.get('origin')],
            'Access-Control-Allow-Methods': [request.headers.get('access-control-request-method')],
            'Access-Control-Allow-Headers': [request.headers.get('access-control-request-headers')],
            'Access-Control-Allow-Credentials': ['true'],
            'Access-Control-Max-Age': ['86400']
        };
        return {
            status: 204,
            headers,
            body: null,
        };
    },
    // ...
}

px_additional_activity_handler

The additional activity handler is a custom function passed to the enforcer. The enforcer runs this callback after sending page_requested or block activity to the collector, and before forwarding the request to the next step in the pipeline. A common use case of the additional activity handler is to set the score as a variable or header. Then the application can read the score and do what is defined within the application's logic.

• Parameters
  • config: HumanSecurityConfiguration
  • context: IContext
  • request: Request
• Returns void or a Promise resolving to void

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_additional_activity_handler: (
        config: HumanSecurityConfiguration,
        context: IContext,
        request: Request
    ): void => {
        request.headers.set('x-px-score', `${context.score}`);
        request.headers.set('x-px-rtt', `${context.riskApiData.riskRtt}`);
    },
    // ...
}

px_enrich_custom_parameters

This custom function enriches activities sent from the enforcer to HUMAN with additional custom data. This data can include user information, session IDs, or other data that HUMAN should have access to. These custom parameters are defined by a configurable function that must return an object that contains these custom parameters. There is a limit of 10 custom parameters.

• Parameters
  • config: HumanSecurityConfiguration
  • request: Request
• Returns CustomParameters | Promise

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_enrich_custom_parameters: async (
        config: HumanSecurityConfiguration,
        request: Request,
    ): CustomParameters | Promise<CustomParameters> => {
        const body = request.method === 'POST' &&
            request.headers.get('content-type')?.includes('application/json') ?
            await request.json() : null;
        return {
            custom_param1: 'hardcoded value',
            custom_param2: request.headers.get('header-name'),
            custom_param3: body?.['body_property']
        };
    },
    // ...
}

px_graphql_enabled

Whether the enforcer should attempt to parse and report information about GraphQL operations on incoming requests.

Default: true

const config: HumanSecurityConfiguration = {
    // ...
    px_graphql_enabled: false,
    // ...
}

px_graphql_routes

A list of prefixes for all routes that should be considered GraphQL routes. If px_graphql_enabled is true, all POST requests with routes that match the prefixes configured here will have their bodies parsed for GraphQL operations.

Default: ["/graphql"]

const config: HumanSecurityConfiguration = {
    // ...
    px_graphql_routes: ['/graphql', '/gql'],
    // ...
}

px_sensitive_graphql_operation_types

A list of operation types (query, mutation, or subscription) that should be considered sensitive. If one or more GraphQL operations on an HTTP request is found to have a type matching the list configured here, it will trigger a Risk API call even if the request contains a valid, unexpired cookie.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_sensitive_graphql_operation_types: ['mutation'],
    // ...
}

px_sensitive_graphql_operation_names

📘

As of version 1.2.0, this configuration supports regular expressions and matches against any extracted GraphQL keywords. For more information, see the px_graphql_keywords and px_extract_graphql_keywords configurations.

A list of operation names or keywords that should be considered sensitive if found in the query. Either a string or regular expression can be configured. If any GraphQL operation is found to have an operation name or extracted keyword that matches one of the configured items, the HTTP request will trigger a Risk API call even if it contains a valid, unexpired cookie.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_sensitive_graphql_operation_names: ['LoginOperation', /sensitiveKeyword/],
    // ...
}

px_graphql_keywords

📘

This configuration was added in version 1.2.0.

A list of strings and/or regular expressions used to identify important terms from the GraphQL operation queries. All strings in a GraphQL query matching the patterns configured here will be extracted and reported to HUMAN. These keywords are used to determine the purpose of the operation (e.g., login, checkout, search), and can also be used to specify which GraphQL operations should be considered sensitive. See the px_sensitive_graphql_operation_names configuration for more information.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_graphql_keywords: ['performLogin', 'addToCart', /keyword\d+/],
    // ...
}

px_extract_graphql_keywords

📘

This configuration was added in version 1.2.0.

A custom function for identifying key terms from GraphQL operation queries, providing an alternative to the px_graphql_keywords configuration. If a list of strings and/or regular expressions is insufficient to GraphQL keywords, this custom function offers more flexibility.

The function accepts the GraphQL query string and must return an array of strings representing all keywords found in the query. These keywords are used to determine the purpose of the operation (e.g., login, checkout, search), and can also be used to specify which GraphQL operations should be considered sensitive. See the px_sensitive_graphql_operation_names configuration for more information.

🚧

If this function is defined and returns an array (even an empty array), then the returned array will be used as the GraphQL keywords. If this function is defined and returns null, then the query will continue to be evaluated using px_graphql_keywords.

• Parameters
  • graphqlQuery: string
• Returns string[] | Promise<string[]>

Default: null

const config: HumanSecurityConfiguration = {
    // ...
    px_extract_graphql_keywords: (graphqlQuery: string): string[] | Promise<string[]> => {
        if (/userId\d+/.test(graphqlQuery)) {
            // report no keywords for this query
            return [];
        } else if (/perform(Login|Signin)/.test(graphqlQuery)) {
            // always report 'login' as the only keyword for this query
            return ['login'];
        } else {
            // process query according to px_graphql_keywords configuration
            return null;
        }
    },
    // ...
}

px_url_decode_reserved_characters

By design, the enforcer treats reserved characters in URLs differently from their percent-encoded counterparts. For example, the URL https://example.com/path-with-%3F-mark will be parsed as having path /path-with-%3F-mark, while the URL https://example.com/path-with-?-mark would be parsed as having path /path-with- and query parameters -mark.

However, some servers, frameworks, or business logic may apply percent decoding to reserved characters within the URL path. Setting this configuration to true will apply percent decoding to reserved characters in the URL path prior to parsing.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_url_decode_reserved_characters: true,
    // ...
}

px_logger_auth_token

The token used to authenticate with HUMAN's enforcer logging services. This value is required for setting up the header-based logger feature.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_logger_auth_token: '<LOGGER_AUTH_TOKEN>',
    // ...
}

px_logging_endpoint_name

The name of the Fastly logging endpoint to which HUMAN debug and error logs should be sent.

Default: "HS-Debug"

const config: HumanSecurityConfiguration = {
    // ...
    px_logging_endpoint_name: 'Human-Log',
    // ...
}

px_backend_score_name

The name associated with the score API (sapi) backend.

Default: "human_sapi"

const config: HumanSecurityConfiguration = {
    // ...
    px_backend_score_name: 'human_sapi_backend',
    // ...
}

px_backend_collector_name

The name associated with the collector backend.

Default: "human_collector"

const config: HumanSecurityConfiguration = {
    // ...
    px_backend_collector_name: 'human_collector_backend',
    // ...
}

px_backend_client_name

The name associated with the client sensor script backend.

Default: "human_client"

const config: HumanSecurityConfiguration = {
    // ...
    px_backend_client_name: 'human_client_backend',
    // ...
}

px_backend_captcha_name

The name associated with the captcha script backend.

Default: "human_captcha"

const config: HumanSecurityConfiguration = {
    // ...
    px_backend_captcha_name: 'human_captcha_backend',
    // ...
}

Account Defender Configurations

px_jwt_cookie_name

The name of the cookie that contains the JWT token from which user identifiers should be extracted.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_jwt_cookie_name: 'auth',
    // ...
}

px_jwt_cookie_user_id_field_name

The field name in the JWT object, extracted from the JWT cookie, that contains the user ID to be extracted and reported.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_jwt_cookie_user_id_field_name: 'nameID',
    // ...
}

px_jwt_cookie_additional_field_names

The field names in the JWT object, extracted from the JWT cookie, that should be extracted and reported in addition to the user ID.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_jwt_cookie_additional_field_names: ['exp', 'iss'],
    // ...
}

px_jwt_header_name

The name of the header that contains the JWT token from which user identifiers should be extracted.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_jwt_header_name: 'x-jwt-authorization',
    // ...
}

px_jwt_header_user_id_field_name

The field name in the JWT object, extracted from the JWT header, that contains the user ID to be extracted and reported.

Default: ""

const config: HumanSecurityConfiguration = {
    // ...
    px_jwt_header_user_id_field_name: 'sub',
    // ...
}

px_jwt_header_additional_field_names

The field names in the JWT object, extracted from the JWT header, that should be extracted and reported in addition to the user ID.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_jwt_header_additional_field_names: ['exp', 'iss'],
    // ...
}

Credential Intelligence Configurations

px_login_credentials_extraction_enabled

This enables the extraction and reporting of credentials from the Enforcer. This must be set to true to enable the Credential Intelligence product.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_login_credentials_extraction_enabled: true,
    // ...
}

px_login_credentials_extraction

An array of configurations for each credential endpoint. Each element in the array is an object representing a distinct endpoint to which credentials are sent, and includes information about how to identify these credential-bearing requests, how to extract the credentials from the request, and how to determine if the request operation (login, signup, etc.) was successful based on the returned HTTP response.

Default: []

const config: HumanSecurityConfiguration = {
    // ...
    px_login_credentials_extraction: [
        {
            path: '/auth/[A-Za-z0-9]{12}/login',
            path_type: 'regex',
            method: 'POST',
            sent_through: 'body',
            user_field: 'username',
            pass_field: 'password',
            login_successful_reporting_method: 'status',
            login_successful_statuses: [200, 202]
        },
        {
            path: '/sign-up',
            method: 'POST',
            sent_through: 'custom',
            extract_credentials_callback: (request: Request): Credentials => {
                if (!request.body || request.headers.get('x-reject-signup')) {
                    return null;
                }
                return {
                    user: request.body['new_username'],
                    pass: request.body['password']
                };
            },
            login_successful_reporting_method: 'custom',
            login_successful_callback: (response: Response): boolean => {
                return response.headers.get('set-cookie')?.includes('session_token=');
            }
        },
        // ...
    ],
    // ...
}

Each credential endpoint configuration object contains the following fields:

path

Required. The path of the request that contains the credentials. It can be either an exact path or a string in the form of a regular expression.

{
    // ...
    path: '/sign-up',
    // ...
}

path_type

Optional. Whether the incoming request path should be evaluated against the configured path as a regular expression or as an exact match.

Possible values:

• "exact" - The value set in path must match the request path exactly as is.
• "regex" - The value set in path represents a regular expression to be matched against the request path.

Default: "exact"

{
    // ...
    path: '/auth/[A-Za-z0-9]{12}/login',
    path_type: 'regex',
    // ...
}

method

Required. The HTTP method of the request that contains the credentials. This can be set to any string representing an HTTP method (e.g., "GET", "POST", "PUT").

{
    // ...
    method: 'POST',
    // ...
}

sent_through

Required. Whether the credentials should be extracted from the request headers, query parameters, body, or via a defined custom callback.

Possible values:

• "body" - The credentials will be extracted according to the configured user_field and pass_field values from the request body.
• "header" - The credentials will be extracted from the request headers according to the configured user_field and pass_field.
• "query-param" - The credentials will be extracted from the query parameters according to the configured user_field and pass_field.
• "custom" - The credentials will be extracted by invoking the extract_credentials_callback.

📘

Sent Through Body: Content Types

If "body" is configured as the sent_through value, the Enforcer must read and parse the incoming request body. The Enforcer parses the request body based on the Content-Type request header.

Supported content types are listed below.

• application/json
• application/x-www-form-urlencoded
• multipart/form-data

user_field

Required only if sent_through is set to "body", "header", or "query-param".

The name of the field, header name, or query parameter where the username can be found.

{
    // ...
    sent_through: 'body',
    user_field: 'username',
    // ...
}

pass_field

Required only if sent_through is set to "body", "header", or "query-param".

The name of the field, header name, or query parameter where the password can be found.

{
    // ...
    sent_through: 'body',
    pass_field: 'password',
    // ...
}

📘

Nested Objects in a JSON Body

The user_field and pass_field configurations support subfields in cases of Content-Type: application/json bodies with nested objects. The subfields can be separated with periods.

For example, the credential endpoint configuration object can include a user_field with the value "user_info.username" and a pass_field with the value "authentication.password" to support extracting the credentials from the following JSON body:

{
    "user_info": {
        "username": "user123"
    },
    "authentication": {
        "password": "P@s$w0rD!"
    }
}

extract_credentials_callback

Required only if sent_through is set to "custom".

A custom credential extraction callback that returns the raw credentials from the request. It receives the HTTP request as a parameter and should return a Credentials object of the following type.

type Credentials = {
    user?: string;  // the raw username
    pass?: string;  // the raw password
};

• Parameters
  • request: Request
• Returns Credentials or a Promise resolving to a Credentials object.

If neither the username nor the password can be extracted from the request, the function should return null.

{
    // ...
    sent_through: 'custom',
    extract_credentials_callback: async (request: Request): Promise<Credentials> => {
        if (!request.body) return null;
        // ...
        // custom extraction resulting in username and password
        // ...
        if (!username || !password) {
            // unsuccessful extraction
            return null;
        }
        // successfully extracted credentials
        return { user: username, pass: password };
    },
    // ...
}

protocol

Optional. Whether to process credentials as part of single or multiple HTTP requests. By default, the module tries to process requests depending on which credential fields were extracted.

Possible values:

• "v2" - Both username and password are present on the same HTTP request and must be extracted successfully to trigger Credential Intelligence.
• "multistep_sso" - The username and password are delivered on different HTTP requests. Either the username or password, but not both, must be extracted successfully to trigger Credential Intelligence.
• "both" - The username and password may be present on the same HTTP request or on different HTTP requests. If either username or password is successfully extracted, the Enforcer will send the credentials according to the multistep_sso protocol. If both username and password are successfully extracted, the Enforcer will send the credentials according to the v2 protocol.

Default: "both"

{
    // ...
    protocol: 'v2',
    // ...
}

login_successful_reporting_method

Required. The method by which the Enforcer will determine whether the login request was successful.

Possible values:

• "status" - The Enforcer will determine if the login request was successful by evaluating the response status code against the login_successful_statuses configuration.
• "body" - The Enforcer will determine if the login request was successful by evaluating the response body content against the login_successful_body_regex configuration.
• "header" - The Enforcer will determine if the login request was successful by evaluating the response headers against the login_successful_header_name and login_successful_header_value configurations.
• "custom" - The Enforcer will determine if the login request was successful by invoking the login_successful_callback.

Default: "status"

login_successful_statuses

Optional. An array of HTTP statuses signifying a successful login. All other status codes will be treated as unsuccessful login attempts. Takes effect only when the login_successful_reporting_method is set to "status".

Default: [200]

{
    // ...
    login_successful_reporting_method: 'status',
    login_successful_statuses: [200, 202],
    // ...
}

login_successful_body_regex

Required only if login_successful_reporting_method is set to "body". A regular expression (or string representing a regular expression) to against which the response body will be evaluated. A match indicates a successful login.

Default: ""

{
    // ...
    login_successful_reporting_method: 'body',
    login_successful_body_regex: 'Welcome, [A-Za-z0-9_]+!'
    // ...
}

login_successful_header_name

Required only if login_successful_reporting_method is set to "header". A response header name signifying a successful login response. If the login_successful_header_value field is empty or not configured, any response containing this header name will be considered a successful login. If the login_successful_header_value is configured, the response header value must be an exact match.

Default: ""

{
    // ...
    login_successful_reporting_method: 'header',
    login_successful_header_name: 'x-login-successful'
    // ...
}

login_successful_header_value

Optional. If this value is configured, a login attempt will be considered successful only if the response contains a header name matching the login_successful_header_name, and whose value is exactly equal to this configuration value. Takes effect only when the login_successful_reporting_method is set to "header".

Default: ""

{
    // ...
    login_successful_reporting_method: 'header',
    login_successful_header_name: 'x-user-status',
    login_successful_header_value: 'logged-in'
    // ...
}

login_successful_callback

Required only if login_successful_reporting_method is set to "custom". A custom callback that accepts the HTTP response and returns a boolean or Promise resolving to a boolean that indicates whether the login attempt was successful.

• Parameters
  • response: Response
• Returns a boolean or Promise resolving to a boolean.

Default: null

{
    // ...
    login_successful_reporting_method: 'custom',
    login_successful_callback: (response: Response): boolean => {
        return response.status === 200 && response.headers.get('set-cookie')?.includes('session_token=');
    },
    // ...
}

px_compromised_credentials_header

The header name to be set on the incoming request if the credentials are compromised. If this header is added, its value will always be 1. If credentials have not been identified as compromised, the header will not be added to the request.

Default: "px-compromised-credentials"

const config: HumanSecurityConfiguration = {
    // ...
    px_compromised_credentials_header: 'x-ci-compromised',
    // ...
}

px_send_raw_username_on_additional_s2s_activity

Whether to report the raw username on the additional_s2s activity. When set to false, the raw username will never be reported. When set to true, the raw username will only be reported if (1) the credentials are compromised, and (2) the login request was successful.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_send_raw_username_on_additional_s2s_activity: true,
    // ...
}

px_automatic_additional_s2s_activity_enabled

Whether to send the additional_s2s activity, which reports on whether the login was successful, automatically in the postEnforce function. This should only be set to false if it is not possible to determine whether the login was successful based on the HTTP response. This means the additional_s2s activity must be sent in some other way.

Default: true

const config: HumanSecurityConfiguration = {
    // ...
    px_automatic_additional_s2s_activity_enabled: false,
    // ...
}

px_additional_s2s_activity_header_enabled

Whether to attach the additional_s2s payload and URL as headers to the original request. This is done so that the additional_s2s activity can be enriched with the proper login_successful value and sent to the provided URL at a later stage. This should only be enabled if the px_automatic_additional_s2s_activity_enabled is set to false.

When set to true, the following headers are added to the origin request:

• px-additional-activity - A JSON object containing the payload of the additional_s2s activity. The login_successful and http_status_code fields should be set prior to sending the activity.
• px-additional-activity-url - The URL to which the additional_s2s payload should be sent as an HTTP POST request.

Default: false

const config: HumanSecurityConfiguration = {
    // ...
    px_additional_s2s_activity_header_enabled: true,
    // ...
}

Below is an example of JavaScript code at the origin server to handle parsing, enrichment, and sending of the additional_s2s activities that arrive on request headers.

app.post('/login', (req, res) => {
    // handle login flow, resulting in variables
    // isLoginSuccessful (boolean) and responseStatusCode (number)

    if (
        req.headers['px-additional-activity'] &&
        req.headers['px-additional-activity-url']
    ) {
        handlePxAdditionalActivity(req, responseStatusCode, isLoginSuccessful);
    }
});

function handlePxAdditionalActivity(req, statusCode, isLoginSuccessful) {
    try {
        // extract url and activity from the request headers
        const url = req.headers['px-additional-activity-url'];
        const activity = JSON.parse(req.headers['px-additional-activity']);

        // enrich the activity details with added information
        activity.details['http_status_code'] = statusCode;
        activity.details['login_successful'] = isLoginSuccessful;

        if (activity.details['credentials_compromised'] && isLoginSuccessful) {
            // add raw username if credentials are compromised and login is successful (only if desired)
            activity.details['raw_username'] = req.body.username;
        } else {
            // remove raw username if login is not successful or credentials are not compromised
            delete activity.details['raw_username'];
        }

        // send the POST request
        axios.post(url, activity, {
            headers: {
                'Authorization': `Bearer ${env.PX_AUTH_TOKEN}`,
                'Content-Type': 'application/json'
            }
        });
    } catch (err) {
        console.error(`Error: ${err}`);
    }
}