Here is a summary of the CISA alert about Fast Flux as a national security threat:
- CISA, together with the NSA, FBI, ASD’s ACSC (Australia), CCCS (Canada), and NCSC-NZ (New Zealand), released a joint Cybersecurity Advisory warning about the ongoing threat of fast flux-enabled malicious activities.
- “Fast flux” is a technique that uses rapidly changing DNS records for a single domain name to hide the true location of malicious servers, making detection and blocking difficult.
- This technique exploits common gaps in network defenses.
- The agencies recommend a multi-layered approach to detecting and mitigating fast flux threats.
- Service providers, particularly Protective DNS (PDNS) providers, should track, share info about, and block fast flux as part of their services.
- Government and critical infrastructure organizations are urged to use cybersecurity and PDNS services that block these activities to close existing defense gaps.
- More information is available in the referenced advisory PDF and resources on selecting a protective DNS service.
Source: www.cisa.gov NSA, CISA, FBI, and International Partners Release Cybersecurity Advisory on “Fast Flux,” a National Security Threat | CISA
