Versions (3)
Version DetailsCurrent
Rev: 4 • Jul 30, 2010, 12:00 PMET DELETED SMTP Protected
alert tcp $SMTP_SERVERS any -> $EXTERNAL_NET 25 (msg:"ET DELETED SMTP Protected"; flow:to_server,established; content:"Subject|3A|"; pcre:"/\Wprotected\W(?!/(25)?X[1-9])/ism"; classtype:policy-violation; sid:2002466; rev:4; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Jul 30, 2010, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
Oct 6, 2025, 4:34 PM
rules/emerging-deleted.rules