alert http $HOME_NET any -> any any (msg:"AT related malicious URL (y.hn/4vnyy)"; flow:established,to_server; http.uri; content:"/4vnyy"; startswith; fast_pattern; http.host; content:"y.hn"; endswith; reference:url,openphish.com; reference:url,julioliraup.github.io/AT/signature.html?sid=6034576; classtype:social-engineering; sid:6034576; rev:1; metadata:signature_severity Major, created_et 2026_11_04;)