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. Fast flux works by cycling through a range of IP addresses and domain names that these botnets use to connect to the Internet. In some cases, IPs and domain names change every day or two; in other cases, they change almost hourly. The constant flux complicates the task of isolating the true origin of the infrastructure.
Read more…
Source: ArsTechnica
Sign up for our Newsletter
The latest news and insights delivered right to your inbox.
Related:
- Accused data thief threw MacBook into a river to destroy evidence
December 29, 2025
South Korean e-tailer Coupang claims a former employee has admitted to improperly accessing data describing 33 million of its customers, but says the accused deleted the stolen data. In a post published on Christmas, Coupang revealed it worked with Mandiant, Palo Alto Networks, and Ernst & Young, to conduct a forensic investigation into the incident, and ...
- South Korea: Shinhan Card reports massive data breaches
December 26, 2025
Shinhan Card, one of the country’s top credit card issuers, reported a massive data leak Tuesday. The Seoul-based company said more than 190,000 cases of potential data exposure have been identified that involve merchant partners’ personal and business information. The incident seems to stem from employee actions rather than an external cyberattack. Against this backdrop, Shinhan ...
- Threat landscape for industrial automation systems in Q3 2025
December 25, 2025
In Q3 2025, the percentage of ICS computers on which malicious objects were blocked decreased from the previous quarter by 0.4 pp to 20.1%. This is the lowest level for the observed period. Regionally, the percentage of ICS computers on which malicious objects were blocked ranged from 9.2% in Northern Europe to 27.4% in Africa. The most ...
- Hackers stole over $2.7B in crypto in 2025, data shows
December 23, 2025
Cybercriminals stole $2.7 billion in crypto this year, a new record for crypto-stealing hacks, according to blockchain-monitoring firms. Once again, in 2025, there were dozens of crypto heists hitting several cryptocurrency exchanges and other web3 and decentralized finance (DeFi) projects. The biggest hack by far was the breach at Dubai-based crypto exchange Bybit, where hackers stole ...
- Nissan says Red Hat breach affected thousands of customers
December 23, 2025
Japanese car giant Nissan has confirmed losing sensitive data on thousands of people as a result of a third-party supply chain attack. In a press release, the company said the recent attack on Red Hat affected its customers, as well, as the latter was commissioned by Nissan to develop a customer management system for one of ...
- US insurance giant Aflac says hackers stole personal and health data of 22.6 million people
December 23, 2025
In June, U.S. insurance giant Aflac disclosed a data breach where hackers stole customers’ personal information, including Social Security numbers and health information, without saying how many victims were affected. On Tuesday, the company confirmed it has begun notifying around 22.65 million people whose data was stolen during the cyberattack. In a filing with the Texas ...