alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING LinkedIn Phishing Landing 2018-02-09 M2"; flow:established,to_client; http.header; content:!"X-LI-UUID|3a|"; nocase; file.data; content:"<title"; nocase; content:"Sign In|20 7c 20|LinkedIn"; nocase; within:40; classtype:social-engineering; sid:2025338; rev:4; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_02_09, deployment Perimeter, confidence Medium, signature_severity Minor, tag Phishing, updated_at 2021_08_31;)