European governments sanctioned Russian individuals and organizations Monday over what they said was a years-long campaign of cyberespionage from Turla and other Russian government-led “destructive attacks” against the bloc.

Monday’s confrontation of Moscow included action from the European Union, its individual member governments and the United Kingdom. It mostly took aim at Center 16 of Russia’s Federal Security Service (FSB) over its control of the cyber threat group known by a list of names including Turla, Secret Blizzard and Waterbug.

“Cybercriminals, self-proclaimed hacktivists and private companies linked to Russia, including actors operating under its instructions, direction or control, have also carried out, enabled and facilitated a wide range of malicious activities,” European Union High Representative Kaja Kallas said in a statement.

The EU called out Russia for the Turla campaign that dated back to 2010 in France with targeting of the government there, and has also featured activity against Germany, Poland, Cyprus, the Netherlands, Austria, Slovakia, Romania and Finland. It made special mention of blaming the FSB for last December’s attacks on Poland’s energy grid, which left half a million people without heat.

In all, the European Union sanctioned nine Russian individuals and four entities. While the EU didn’t name them, Kallas’s statement said it also included officers of Russia’s Main Intelligence Directorate of the General Staff (GRU).

The United Kingdom’s cyber sanctions, the first it’s done in coordination with the EU, featured a longer list of 24 individuals and entities. The U.K. named GRU senior leadership figures Vyacheslav Stafeyev, Ivan Senin and Ivan Kasyanenko for their alleged hybrid cyberattacks in conjunction with cybercriminals and recruitment of hackers across Russian universities. The U.K. also sanctioned individuals behind Lumma Stealer, the target of an international takedown last year.

“These sanctions strike at the core of the cybercriminal networks propping up the Russian state’s aggression, and the UK and EU are sending a clear message that Russia cannot hide behind its use of these proxy groups,” Foreign Secretary, Yvette Cooper, said in a news release that mentioned “destructive attacks” by Russia. “From directing criminals to targeting businesses, and striking Poland’s energy grid in the depths of winter, the Russian state is sinking to new lows in its attempts to undermine European security.”

At least two European governments, Germany and France, said they would be summoning Russia’s ambassadors in their nations over the attacks.

Also Monday, the European Union announced sanctions against the company behind Russia’s messaging app, Max, citing its use of surveillance features to clamp down on dissent. And separately, 13 nations including the United States issued a warning on Monday about Russian government hackers targeting routers to carry out critical infrastructure attacks.

Russia routinely denies allegations of responsibility for any malicious cyber activity.

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Federal prosecutors have charged a Russian national with conspiracy to commit unauthorized computer access in connection with a sprawling cyber-espionage campaign linked to the Russia-aligned threat group Void Blizzard, according to a criminal complaint filed in federal court this week.

Denis Nikolayevich Obrezko, a Russian citizen, is accused of breaking into systems owned by companies in the United States and elsewhere, according to an FBI affidavit unsealed Tuesday. Investigators allege Obrezko facilitated the campaign by purchasing a virtual private server and domain names used in attacks targeting businesses, educational institutions, and other organizations.

The charges come roughly a year after Microsoft publicly identified Void Blizzard — which it also tracks as Laundry Bear — as a state-sponsored Russian threat group conducting large-scale espionage operations against government agencies, defense suppliers, and critical infrastructure providers across NATO member states, Ukraine, and beyond. Dutch intelligence and security services separately confirmed in May 2025 that the group had infiltrated the Netherlands’ national police force in September 2024, stealing work-related contact information on police staff.

The FBI affidavit describes a methodical but largely unsophisticated operation. Investigators say Void Blizzard primarily relied on stolen session tokens to authenticate to victim accounts without triggering re-authentication requirements, then used a U.S.-based commercial proxy service to mask the connection’s location. The group typically routed traffic through a VPN before selecting proxy IP addresses in the same region as a target, allowing it to bypass geographic firewall restrictions.

From June-July 2024, the FBI received tips from a foreign partner and a U.S.-based private-sector firm identifying several American companies being targeted by the emerging group. Investigators subsequently verified intrusions at 11 U.S. companies, a figure the affidavit describes as likely a fraction of the total victim count nationwide.

Void Blizzard’s methods, while not technically advanced, have proven broadly effective. Microsoft researchers noted in 2025 that the group’s success illustrates the sustained risk posed by even basic intrusion techniques when applied at scale. The group has been observed harvesting bulk email and files from compromised cloud environments, accessing Microsoft Teams conversations, and cataloging Microsoft Entra ID configurations to map organizational structures.

In April 2025, Microsoft identified a separate spear-phishing campaign attributed to Void Blizzard that targeted more than 20 non-governmental organizations in Europe and the United States, using typosquatted domains to spoof Microsoft authentication pages. The affidavit corroborates that activity, identifying domains such as miscrsosoft[.]com and micsrosoftonline[.]com registered through accounts connected to the same infrastructure used by the group.

Obrezko appeared in court Tuesday and agreed to be taken into custody while awaiting trial.

You can read the affidavit below.

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Hackers linked to Russia’s military intelligence units are using known flaws in older Internet routers to mass harvest authentication tokens from Microsoft Office users, security experts warned today. The spying campaign allowed state-backed Russian hackers to quietly siphon authentication tokens from users on more than 18,000 networks without deploying any malicious software or code.

Microsoft said in a blog post today it identified more than 200 organizations and 5,000 consumer devices that were caught up in a stealthy but remarkably simple spying network built by a Russia-backed threat actor known as “Forest Blizzard.”

How targeted DNS requests were redirected at the router. Image: Black Lotus Labs.

Also known as APT28 and Fancy Bear, Forest Blizzard is attributed to the military intelligence units within Russia’s General Staff Main Intelligence Directorate (GRU). APT 28 famously compromised the Hillary Clinton campaign, the Democratic National Committee, and the Democratic Congressional Campaign Committee in 2016 in an attempt to interfere with the U.S. presidential election.

Researchers at Black Lotus Labs, a security division of the Internet backbone provider Lumen, found that at the peak of its activity in December 2025, Forest Blizzard’s surveillance dragnet ensnared more than 18,000 Internet routers that were mostly unsupported, end-of-life routers, or else far behind on security updates. A new report from Lumen says the hackers primarily targeted government agencies—including ministries of foreign affairs, law enforcement, and third-party email providers.

Black Lotus Security Engineer Ryan English said the GRU hackers did not need to install malware on the targeted routers, which were mainly older Mikrotik and TP-Link devices marketed to the Small Office/Home Office (SOHO) market. Instead, they used known vulnerabilities to modify the Domain Name System (DNS) settings of the routers to include DNS servers controlled by the hackers.

As the U.K.’s National Cyber Security Centre (NCSC) notes in a new advisory detailing how Russian cyber actors have been compromising routers, DNS is what allows individuals to reach websites by typing familiar addresses, instead of associated IP addresses. In a DNS hijacking attack, bad actors interfere with this process to covertly send users to malicious websites designed to steal login details or other sensitive information.

English said the routers attacked by Forest Blizzard were reconfigured to use DNS servers that pointed to a handful of virtual private servers controlled by the attackers. Importantly, the attackers could then propagate their malicious DNS settings to all users on the local network, and from that point forward intercept any OAuth authentication tokens transmitted by those users.

DNS hijacking through router compromise. Image: Microsoft.

Because those tokens are typically transmitted only after the user has successfully logged in and gone through multi-factor authentication, the attackers could gain direct access to victim accounts without ever having to phish each user’s credentials and/or one-time codes.

“Everyone is looking for some sophisticated malware to drop something on your mobile devices or something,” English said. “These guys didn’t use malware. They did this in an old-school, graybeard way that isn’t really sexy but it gets the job done.”

Microsoft refers to the Forest Blizzard activity as using DNS hijacking “to support post-compromise adversary-in-the-middle (AiTM) attacks on Transport Layer Security (TLS) connections against Microsoft Outlook on the web domains.” The software giant said while targeting SOHO devices isn’t a new tactic, this is the first time Microsoft has seen Forest Blizzard using “DNS hijacking at scale to support AiTM of TLS connections after exploiting edge devices.”

Black Lotus Labs engineer Danny Adamitis said it will be interesting to see how Forest Blizzard reacts to today’s flurry of attention to their espionage operation, noting that the group immediately switched up its tactics in response to a similar NCSC report (PDF) in August 2025. At the time, Forest Blizzard was using malware to control a far more targeted and smaller group of compromised routers. But Adamitis said the day after the NCSC report, the group quickly ditched the malware approach in favor of mass-altering the DNS settings on thousands of vulnerable routers.

“Before the last NCSC report came out they used this capability in very limited instances,” Adamitis told KrebsOnSecurity. “After the report was released they implemented the capability in a more systemic fashion and used it to target everything that was vulnerable.”

TP-Link was among the router makers facing a complete ban in the United States. But on March 23, the U.S. Federal Communications Commission (FCC) took a much broader approach, announcing it would no longer certify consumer-grade Internet routers that are produced outside of the United States.

The FCC warned that foreign-made routers had become an untenable national security threat, and that poorly-secured routers present “a severe cybersecurity risk that could be leveraged to immediately and severely disrupt U.S. critical infrastructure and directly harm U.S. persons.”

Experts have countered that few new consumer-grade routers would be available for purchase under this new FCC policy (besides maybe Musk’s Starlink satellite Internet routers, which are produced in Texas). The FCC says router makers can apply for a special “conditional approval” from the Department of War or Department of Homeland Security, and that the new policy does not affect any previously-purchased consumer-grade routers.