alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Possible Instagram Phishing Domain"; flow:established,to_server; http.host; content:"lnstagram"; fast_pattern; pcre:"/\.(?:tk|gq|ga|xyz|ml|cf)$/"; classtype:social-engineering; sid:2031005; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_10_13, deployment Perimeter, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_13;)