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Update impersonation_microsoft_credential_theft.yml ESC-5582 #3733

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Update impersonation_microsoft_credential_theft.yml ESC-5582 #3733

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Update impersonation_microsoft_credential_theft.yml ESC-5582
IndiaAce Jan 5, 2026
59f9a78
Merge branch 'main' into lwescott-ESC-5582-update_impersonation_micro…
aidenmitchell Jan 12, 2026
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5 changes: 4 additions & 1 deletion detection-rules/impersonation_microsoft_credential_theft.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,10 @@ source: |
)
or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)
and not profile.by_sender().any_messages_benign
and not (
profile.by_sender().any_messages_benign
and coalesce(headers.auth_summary.dmarc.pass, false)
)

attack_types:
- "Credential Phishing"
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