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OpenAI ChatGPT Enterprise User Activity From High Number of Countries

Detects ChatGPT Enterprise activity for the same user email from at least three countries and two unique user agents within a four-hour interval across any compliance data stream. Stolen session cookies often produce…

Description

Detects ChatGPT Enterprise activity for the same user email from at least three countries and two unique user agents within a four-hour interval across any compliance data stream. Stolen session cookies often produce post-auth activity (conversation views, deletions, downloads) without a new login event, so this rule is not limited to authentication logs.

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

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Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Known benign triggers

  • Cloud egress, split-tunnel, or dual-homed clients that present different public IPs for concurrent sessions.
  • Users on VPN or proxy egress that geo-resolves through multiple regions in a short window.

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