CISA and FBI warn that “fast flux” technique aids malware, C2, and phishing networks by obscuring malicious server locations through rapid DNS record changes. It's a persistent network security threat, complicating tracking and blocking by authorities. Recommended countermeasures include blocking malicious IPs and domains and enhancing monitoring.
https://thehackernews.com/2025/04/cisa-and-fbi-warn-fast-flux-is-powering.html