alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"🐾 - ℹ Slack 💬 client for Windows"; flow:to_server, stateless; threshold:type limit, track by_src,count 1, seconds 86400; tls_sni; content:"slack.com"; nocase; ja3.hash; content:"598872011444709307b861ae817a4b60"; reference:url,https://slack.com/intl/fr-fr/downloads/windows; metadata:created_at 2022_02_15, updated_at 2022_06_15; sid:3300789; rev:2; classtype:misc-activity;)