Manual Chapter : Alert Logs

Applies To:

  • BIG-IP ASM

    21.0.0, 17.5.1, 17.5.0, 17.1.3, 17.1.2, 17.1.1, 17.1.0, 17.0.0, 16.1.6, 16.1.5, 16.1.4, 16.1.3, 16.1.2, 16.1.1, 16.1.0, 16.0.1, 16.0.0

Updated Date: 07/07/2026

Alert Logs

You can view the alert log to see detailed information on possible or actual attacks on your encrypted data.

  1. On the Main tab, click System > Logs > Data Protection.

    The Data Protection log appears. The Data Protection log displays the following alert information:

    • Timestamp: The date and time when the system logged the alert information.
    • Host: The name of the host that logged the alert information.
    • Client IP: The IP address of the victim of the alert.
    • Event URL: The URL of the site that was in use when the alert was sent.
    • User Name: The name of the client-side user who performed the action that triggered the alert.
    • Event Type: The type of the alert, which will be one of the following:
      • VCRYPT: Server-side Encryption Error alerts. These alerts are created when the BIG-IP system detects an error in the Application Layer Encryption component.
      • AJAX_VCRYPT: Encryption Alerts for the Full AJAX payload. These alerts are created when the BIG-IP system detects an encryption or decryption error in the full AJAX payload.
      • JS_VCRYPT: Client-side Encryption Error Alerts. These alerts are created when the BIG-IP DataSafe JavaScript detects an error in the Application Layer Encryption component.
      • COMPONENTS_VALIDATION: Server-side Missing Components Alerts. These alerts are created when the BIG-IP system detects missing BIG-IP DataSafe components on a protected web page.
      • JS_MISSING_COMPONENTS: Client-side Missing Components Alerts. These alerts are created when the BIG-IP DataSafe JavaScript detects missing BIG-IP DataSafe components on a protected web page.
    • Component: The alert sub-type.

  2. To view additional information on an alert, click the More Details link in the far-right column.

    Clicking this link displays the following additional information on an alert:

    • Defined Value: This is used only in Encryption Staging Mode, when Component = VCRYPT_STAGING_MODE_FAILED. The parameter name is displayed along with the type of problem, which will be either MISMATCH or MISSING.
    • Resolved Value: This is used only in Encryption Staging Mode, when Component = VCRYPT_STAGING_MODE_FAILED. The parameter name is displayed along with the type of problem, which will be either MISMATCH or MISSING.
    • Details: The information displayed here varies depending on the alert type.
    • Additional Info: The information displayed here varies depending on the alert type.
    • URL Name: The URL of the site from where the alert was sent, as configured in the BIG-IP. This can differ from the Event URL, for example if a wildcard URL was configured in the BIG-IP.
    • Client IP Geolocation: The geographic location of the client IP.
    • Guid: An internal ID generated by BIG-IP DataSafe for identifying the user whose action generated the alert.
    • User Agent: The user’s browser type and operating system.
    • HTTP Referrer: The URL of the web page that was visited just before the Alert URL was visited.