alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Hotmail Message Access"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/mail/ReadMessageLight.aspx"; http.header; content:"mail.live.com"; classtype:policy-violation; sid:2008239; rev:5; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_20;)