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British Gas customer sign-in (identity.auth.britishgas.co.uk) is hosted on Microsoft Entra External ID / B2C, so the page carries Microsoft login markup and is scored as an M365 look-alike. Blocked 05/11/2026 14:50 with a legitimacy score of 17/85 and one indicator (phi_021_suspicious_url_structure, triggered by the tenant GUID in the path). Adds britishgas.co.uk and its subdomains to exclusion_system.domain_patterns. The pattern is anchored on the origin, so britishgas.co.uk.evil.com and britishgas.co.uk-login.com still fall through to detection. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01J5UjQK67SyYd1Byh1iLEG8
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🔒 This PR will now be automatically closed due to the above rules. |
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British Gas customer sign-in (identity.auth.britishgas.co.uk) is hosted on Microsoft Entra External ID / B2C, so the page carries Microsoft login markup and is scored as an M365 look-alike. Blocked 05/11/2026 14:50 with a legitimacy score of 17/85 and one indicator (phi_021_suspicious_url_structure, triggered by the tenant GUID in the path).
Adds britishgas.co.uk and its subdomains to exclusion_system.domain_patterns. The pattern is anchored on the origin, so britishgas.co.uk.evil.com and britishgas.co.uk-login.com still fall through to detection.
Claude-Session: https://claude.ai/code/session_01J5UjQK67SyYd1Byh1iLEG8