Versions (3)
Version DetailsCurrent
Rev: 1 • Jan 31, 2023, 12:00 PMET INFO Observed Notion Notes Taking App Domain (api .notion .com in TLS SNI)
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Notion Notes Taking App Domain (api .notion .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"api.notion.com"; bsize:14; fast_pattern; reference:md5,0430047d09dd17f3e04dd6a39bca2c3c; reference:url,www.notion.so/; reference:url,www.welivesecurity.com/wp-content/uploads/2023/01/eset_apt_activity_report_t32022.pdf; classtype:misc-activity; sid:2044043; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_01_31, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_31;)
Jan 31, 2023, 12:00 PM
Jan 31, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 25, 2025, 9:35 PM
rules/emerging-info.rules