alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (msg:"ET WEB_SPECIFIC_APPS phpBB3 registration (Bogus Stage3 GET)"; flow:to_server,established; content:"GET "; depth:4; nocase; content:"/ucp.php"; http_uri; nocase; content:"mode=confirm"; http_uri; content:"id="; http_uri; pcre:"/(\?|&)id=/Ui"; content:"type="; http_uri; classtype:web-application-attack; sid:2010898; rev:3; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_08_22;)