alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"GPL IMAP copy literal overflow attempt"; flow:established,to_server; content:"COPY"; nocase; pcre:"/\sCOPY\s[^\n]*?\{/smi"; byte_test:5,>,1024,0,string,dec,relative; reference:bugtraq,1110; classtype:misc-attack; sid:2103058; rev:2; metadata:created_at 2010_09_23, confidence Medium, signature_severity Minor, updated_at 2019_07_26;)