Microsoft accuses Russia’s FSB of using malware against foreign embassies

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Microsoft says cyber-espionage run ‘poses precocious risk’ to overseas embassies, diplomats and different groups successful Moscow.

Published On 31 Jul 2025

Microsoft has accused 1 of the Russian government’s premier cyber-espionage units of deploying malware against embassies and diplomatic organisations successful Moscow by leveraging section net work providers.

In a blog post connected Thursday, Microsoft Threat Intelligence said the run by Russia’s Federal Security Service, besides known arsenic the FSB, “has been ongoing since astatine slightest 2024”.

The effort “poses a precocious hazard to overseas embassies, diplomatic entities, and different delicate organizations operating successful Moscow, peculiarly to those entities who trust connected section net providers”, Microsoft said.

The investigation confirms for the archetypal clip that the FSB is conducting cyber-espionage astatine the ISP level, according to Microsoft’s findings.

“This means that diplomatic unit utilizing section ISP oregon telecommunications services successful Russia are highly apt targets of [the campaign] wrong those services,” the blog station reads.

Microsoft tracked an alleged FSB cyber-espionage run that successful February targeted unnamed overseas embassies successful Moscow.

The FSB enactment facilitates the installation of customized backdoors connected targeted computers, which tin beryllium utilized to instal further malware, arsenic good arsenic bargain data, Microsoft said.

The findings travel amid expanding pressure from Washington for Moscow to hold to a ceasefire successful its warfare successful Ukraine and pledges from NATO countries to summation defence spending surrounding their ain concerns astir Russia.

Microsoft did not accidental which embassies were targeted by the FSB campaign.

The US Department of State, arsenic good arsenic Russian diplomats, did not respond to requests for remark from the Reuters quality agency.

Russia has denied carrying retired cyber-espionage operations. There was nary contiguous remark from Moscow connected Microsoft’s study connected Thursday.

The hacking portion linked to the activity, which Microsoft tracks arsenic “Secret Blizzard” and others categorise arsenic “Turla”, has been hacking governments, journalists and others for astir 20 years, the US authorities said successful May 2023.

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