alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"ET WEB_SPECIFIC_APPS phpBB3 multiple login attempts"; flow:to_server,established; content:"POST "; depth:5; nocase; content:"/ucp.php"; http_uri; nocase; content:"mode=login"; http_uri; threshold:type threshold, track by_src, count 2, seconds 60; classtype:attempted-user; sid:2010899; rev:3; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_08_22;)