alert http $HOME_NET any -> any any (msg:"AT related malicious URL (dpd.keisti.im/lt/)"; flow:established,to_server; http.uri; content:"/lt/"; startswith; fast_pattern; http.host; content:"dpd.keisti.im"; endswith; reference:url,openphish.com; reference:url,julioliraup.github.io/AT/signature.html?sid=6016407; classtype:social-engineering; sid:6016407; rev:1; metadata:signature_severity Major, created_et 2026_06_30;)