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OpenAI ChatGPT Enterprise Authentication from a Suspicious User Agent

Detects successful ChatGPT Enterprise authentication events where the user agent looks scripted (for example Python, curl, Go HTTP clients, aiohttp, scrapers, or headless browsers) rather than a normal browser.…

Description

Detects successful ChatGPT Enterprise authentication events where the user agent looks scripted (for example Python, curl, Go HTTP clients, aiohttp, scrapers, or headless browsers) rather than a normal browser. Adversaries and automation often reuse stolen sessions or tokens with non-browser clients.

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 ATT&CK technique it maps to.

Known benign triggers

  • Approved automation, compliance API tooling, or SSO libraries that use non-browser user agents.

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