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SID: 2040136 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2Nov 28, 2022, 12:00 PM

ET INFO Observed URL Shortening Service Domain (t .ly in TLS SNI)

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed URL Shortening Service Domain (t .ly in TLS SNI)"; flow:established,to_server; tls.sni; content:"t.ly"; bsize:4; fast_pattern; classtype:misc-activity; sid:2040136; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_11_28, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_28;)

Nov 28, 2022, 12:00 PM

Apr 28, 2023, 12:00 PM

Sep 21, 2024, 3:00 AM

Aug 27, 2025, 9:35 PM

rules/emerging-info.rules