Fast Flux DNS Evasion Remains Effective

The CISA and global agencies are calling for action against Fast Flux DNS evasion, an advanced tactic used by ransomware groups and state actors. This method, which involves rapidly changing DNS records to avoid detection and shutdowns, is employed by groups such as Gamaredon and Hive ransomware. The CISA recommends monitoring rapid IP changes and low TTLs, integrating threat intelligence feeds, deploying DNS/IP blocking lists, and using real-time alert systems.