alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Opera Adblocker Update Flowbit Set"; flow:established,to_server; flowbits:set,ET.opera.adblock; flowbits:noalert; http.host; bsize:40; content:"get.geo.opera.com.global.prod.fastly.net"; classtype:not-suspicious; sid:2024006; rev:4; metadata:created_at 2017_02_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_03_24;)