diff --git a/detection-rules/link_credential_phishing.yml b/detection-rules/link_credential_phishing.yml index 24184577d11..56a1937f0b1 100644 --- a/detection-rules/link_credential_phishing.yml +++ b/detection-rules/link_credential_phishing.yml @@ -10,16 +10,15 @@ source: | and beta.linkanalysis(.).credphish.confidence in ("medium", "high") ) and ( - profile.by_sender().prevalence in ("new", "outlier") + not profile.by_sender().solicited or ( profile.by_sender().any_messages_malicious_or_spam and not profile.by_sender().any_false_positives ) ) - + // negate highly trusted sender domains unless they fail DMARC authentication - and - ( + and ( ( sender.email.domain.root_domain in $high_trust_sender_root_domains and ( @@ -30,6 +29,7 @@ source: | ) or sender.email.domain.root_domain not in $high_trust_sender_root_domains ) + and not profile.by_sender().any_false_positives attack_types: - "Credential Phishing"