alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Mobile Device Posting Phone Number"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:"&Phone"; fast_pattern; nocase; content:"Number="; nocase; pcre:"/\x26Phone(Number\x3D|\x5FNumber\x3D|\x2DNumber\x3D)/i"; classtype:policy-violation; sid:2013208; rev:4; metadata:created_at 2011_07_06, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_11;)