alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Yahoo Briefcase Upload"; flow:established,to_server; http.uri; content:"/process_bcmultipart_form"; nocase; http.host; content:"briefcase.yahoo.com"; classtype:policy-violation; sid:2001044; rev:9; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_06;)