alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"🐾 - 🚨 Flipper Zero 🐬 update"; threshold:type limit, track by_src,count 1, seconds 3600; flow:to_server, stateless; tls_sni; content:"update.flipperzero.one"; nocase; reference:url,https://flipperzero.one/; metadata:created_at 2022_12_28, updated_at 2022_12_28; sid:3300297; rev:1; classtype:policy-violation;)