The National Security Agency (NSA) has released a joint Cybersecurity Advisory to warn about the “Fast Flux” technique, used by cyber actors to conceal their activities. This technique involves rapidly changing the IP address associated with a domain name, making it difficult to track and block malicious activity.
According to the NSA, fast flux is a serious threat to national security, enabling cybercriminals and nation-state actors to create resilient command and control infrastructure. This infrastructure can be used for espionage, phishing campaigns, and other cyber techniques.
The NSA recommends that cybersecurity providers implement a multi-layered approach to detection and use Protective DNS services to safeguard critical infrastructure and sensitive information. Organizations within the Department of Defense (DoD) and Defense Industrial Base (DIB) should also leverage these services to block malicious activity.
The joint advisory is co-authored by multiple agencies, including CISA, FBI, Australian Cyber Security Centre, Canadian Centre for Cyber Security, and New Zealand National Cyber Security Centre. The NSA offers no-cost cybersecurity services to Defense Industrial Base companies, including PDNS services.
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Source: https://www.nsa.gov/Press-Room/Press-Releases-Statements/Press-Release-View/Article/4143636/nsa-and-partners-issue-guidance-on-fast-flux-as-a-national-security-threat