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Domain fluxing

(also domain flux)

Domain fluxing definition

Domain fluxing is a technique used by hackers to obscure their operations by constantly changing the domain name of the server involved in malicious activities. Domain fluxing is particularly effective against cybersecurity measures that rely on static blocklists or reputation-based mechanisms.

See also: IP address blocking, virtual IP address, bot herder, botnet, DNS record, DNS query, DNS TTL, heuristic analysis, DNS sinkhole

Stopping domain fluxing

  • Implement behavior-based analysis techniques to detect anomalies in network traffic and communication patterns. Domain fluxing often generates irregular traffic patterns that differ from normal network behavior, such as unusual query rates or frequent changes in resolved IP addresses.
  • Use real-time threat intelligence feeds that provide up-to-date information on known malicious domain names to proactively block domains associated with domain fluxing attacks.
  • Employ advanced threat detection systems that incorporate machine learning, artificial intelligence, and anomaly detection algorithms. These systems can adapt to the rapidly-shifting landscape of domain fluxing attacks.
  • Identify and sinkhole the malicious domains associated with domain fluxing. Sinkholing involves redirecting traffic from suspected systems to controlled servers, where you can gather intelligence and plan responses.