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DETECTION OVERVIEW
Risk Factors
DoH is supported by several browsers, applications, and public DoH providers. DoH can be enabled by anyone–even if your network prohibits the service. Attackers can hide C&C communication over DNS through the encryption provided by DoH.
The system might change the risk score for this detection.
Kill Chain
Risk Score
41
N/A
Quarantine the client and check for indicators of compromise
Disable DoH by updating individual browser settings or establishing an enterprise policy
Disable DoH requests sent from Firefox browsers by adding a canary domain (use-application-dns.net) for your local network resolver
Block outbound traffic to known DoH providers at the network perimeter
