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Update impersonation_human_resources.yml #1006

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merged 2 commits into from
Nov 21, 2023
Merged

Update impersonation_human_resources.yml #1006

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e7907bf
Update impersonation_human_resources.yml
aidenmitchell Nov 20, 2023
38447cd
Merge branch 'main' into patch-79
morriscode Nov 21, 2023
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10 changes: 9 additions & 1 deletion detection-rules/impersonation_human_resources.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,15 @@ source: |
// Negate common marketing mailers
and not regex.icontains(sender.display_name, 'HR (Events|Expert)')

and (0 < length(body.links) < 10 or length(attachments) > 0)
and (
(0 < length(body.links) < 10 or length(attachments) > 0)
// mass-mailer infra abuse results in an inflated link count due to mailer templates that include links for unsubbing, changing preferences, etc.
// loosening the link count check as a result ensures we fire even with these conditions
or (
any(body.links, strings.ilike(.display_text, "*unsubscribe*", "update your preferences", "add us to your address book"))
and 0 < length(body.links) < 15
)
)
// Request and Urgency
and any(ml.nlu_classifier(body.current_thread.text).entities, .name == "request")
and any(ml.nlu_classifier(body.current_thread.text).entities, .name == "urgency")
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