The EU, its members and the U.K. took action against Russian government officials and others while attributing the winter cyberattacks against Poland’s energy grid to the FSB.

State-sponsored attackers are targeting critical infrastructure networks in defense, communications, energy, finance, government and health care.

Anne Keast-Butler, head of the GCHQ, said her agency was developing an artificial intelligence-powered cyber shield as other nations were deploying AI in warfare.

Researchers said it’s the first-ever mapping of attack traffic to mobile operator signalling infrastructure.

Tyler Robert Buchanan “was the glue that held this gang together,” a cybercrime researcher said. He faces up to 22 years in federal prison.

Forest Blizzard, a threat group attributed to Russia’s GRU, hijacked network traffic to steal credentials and tokens for Microsoft accounts and other services.

Microsoft, which led the effort, said it seized 330 domains that powered the phishing platform’s core infrastructure. The alleged creator was also named in a civil complaint.

The marketplace was one of the world’s largest hubs for cybercrime with more than 142,000 members. Officials identified and arrested multiple suspects after seizing the site’s database.

The Cybersecurity and Infrastructure Security Agency said the attack highlighted threats from vulnerable edge devices to operational technology and industrial control systems.

The service became a prolific tool for cybercriminals in the past year, as it facilitated thousands of attacks involving credential theft, account takeovers, mass phishing and payment…