NSA warns “fast flux” threatens national security. What is fast flux anyway?

Image credit: Cliff Hang from Pixabay. Article by Dan Goodin. Ars Technica – April 4, 2025. 

A technique that hostile nation-states and financially motivated ransomware groups are using to hide their operations poses a threat to critical infrastructure and national security, the National Security Agency has warned. The technique is known as fast flux. It allows decentralized networks operated by threat actors to hide their infrastructure and survive takedown attempts that would otherwise succeed. […]

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