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Longtime ‘Fast Flux’ Evasion Technique Now a National Security Threat

This April 4, 2025 Security Boulevard article covers a CISA, FBI, and NSA advisory on fast flux, a decades-old technique threat actors use to evade detection. Bugcrowd founder Casey Ellis says the technique's resurgence reflects a shift in attacker behavior, calling the advisory a national security issue that demands immediate attention.

Source description, as published

CISA, the FBI, and NSA issued an advisory about the national security threat posed by "fast flux," a technique used by threat actors to evade detection of their C2 infrastructures that has been around for two decades but has seen a resurgence in use by ransomware gangs and nation-state bad actors.

Inventors / authors: Jeffrey Burt