alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Mattermost API Usage"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/api/v4/teams/name/"; http.header; header_lowercase; content:"|0d 0a|authorization|3a 20|Bearer|20|"; fast_pattern; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; content:!"|0d 0a|user-agent|0d 0a|"; reference:md5,df7e78609dd63fe9f3be87be0e2420fa; classtype:misc-activity; sid:2029599; rev:3; metadata:attack_target Client_Endpoint, created_at 2020_03_09, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Minor, updated_at 2024_04_20;)