alert http $HOME_NET any -> any any (msg:"AT related malicious URL (ltda-caix.online/tsi/)"; flow:established,to_server; http.uri; content:"/tsi/"; startswith; fast_pattern; http.host; content:"ltda-caix.online"; endswith; reference:url,openphish.com; reference:url,julioliraup.github.io/AT/signature.html?sid=6034646; classtype:social-engineering; sid:6034646; rev:1; metadata:signature_severity Major, created_et 2026_11_05;)