What is sanitized by default

This page explains what is removed or redacted when we process a HAR file for our customers.

Request Headers

• Headers can contain sensitive information like authorization tokens, API keys, and authentication data.

• Default words to scrub:

  • Authorization: Used for access tokens and credentials.

  • client_id: Identifies the client in OAuth scenarios.

  • client_secret: Secret key for OAuth client authentication.

  • auth: Generic authentication headers.

  • authenticity_token: Tokens used to prevent CSRF attacks.

  • x-client-data: Custom header for client-specific data.

Cookies

• Cookies may store sensitive session and user information.

• Default cookies to scrub:

  • access_token: Token for user authentication.

  • refresh_token: Token to obtain a new access token.

  • id_token: Token representing the user's identity.

  • facetID: Could be used in multi-factor authentication.

  • serverData: Generic server data that could be sensitive.

  • vses2: Example of a custom sensitive cookie.

Query and POST Parameters

• These parameters often include sensitive data used in authentication and data transmission.

• Default parameters to scrub:

  • SAMLRequest: Used in SAML authentication.

  • SAMLResponse: Response for SAML authentication.

  • code: Authentication code in OAuth.

  • code_challenge: PKCE code challenge in OAuth.

  • code_verifier: PKCE code verifier in OAuth.

  • state: State parameter used in OAuth for CSRF protection.

  • usg: Example of a custom query parameter that could be sensitive.

  • appID: Application identifier.

  • assertion: Assertions used in authentication.

  • challenge: Challenge parameter, potentially in multifactor authentication.

  • email: User's email address.

  • password: User's password.

Response Headers

• Certain response headers can reveal sensitive information.

• Default response headers to scrub:

  • Set-Cookie: Commonly used for session management and may contain sensitive info.

MIME Types

• MIME types indicating specific data formats can contain sensitive information.

• Default MIME types to scrub:

  • application/javascript: JavaScript files can contain sensitive data.

  • text/javascript: Textual JavaScript files.

  • application/json: JSON often contains sensitive data.

  • application/xml: XML can also contain sensitive data.

See something missing?

• Check out our article on Configuration to see how you can customize these settings.

• If you would like to request that we expand any of this functionality, please raise a support ticket.