alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"🐾 - 🚨 Opera Browser 🌐"; flow:to_server, stateless; threshold:type limit, track by_src,count 1, seconds 86400; http.user_agent; content:"Mozilla/5.0"; fast_pattern; nocase; content:"Chrome/"; nocase; content:"OPR/"; nocase; reference:url,https://www.opera.com/; metadata:created_at 2021_08_03, updated_at 2023_10_30; sid:3300108; rev:5; classtype:policy-violation;)