Versions (2)
Version DetailsCurrent
Rev: 1 • Sep 11, 2025, 12:00 PMET INFO Observed DNS Query to Online PDF Viewer Domain (postoffice .adobe .com)
alert dns $HOME_NET any -> any any (msg:"ET INFO Observed DNS Query to Online PDF Viewer Domain (postoffice .adobe .com)"; dns.query; bsize:20; content:"postoffice.adobe.com"; nocase; classtype:misc-activity; sid:2064576; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_09_11, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_11;)
Sep 11, 2025, 12:00 PM
Sep 11, 2025, 12:00 PM
Sep 11, 2025, 9:34 PM
Sep 15, 2025, 9:36 PM
rules/emerging-info.rules