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U.S. Cybersecurity and Infrastructure Security Agency ( CISA ) has confirmed that Russian regime - backed hackers stole email from several U.S. federal agencies as a solution of an ongoing cyberattack at Microsoft .

In a statement published Thursday , the U.S. cyber agency said the cyberattack , which Microsoft initially disclosed in January , allowed the hacker to slip federal government emails “ through a successful compromise of Microsoft corporate e-mail account . ”

The drudge , which Microsoft calls “ Midnight Blizzard , ” also known as APT29 , are wide consider to work for Russia ’s Foreign Intelligence Service , or SVR .

“ Midnight Blizzard ’s successful compromise of Microsoft corporate email accounts and the exfiltration of correspondence between office and Microsoft present a grave and unacceptable jeopardy to way , ” say CISA .

The Union cyber agency said itissued a fresh emergency brake directiveon April 2 govern civilian government agencies to take action to plug their email accounts , base on novel information that the Russian hackers were ramping up their intrusion . CISA made item of the emergency directive public on Thursday after give affected federal agencies a workweek to reset passwords and secure moved organization .

CISA did not name the unnatural Union agency that had emails stolen , and a representative for CISA did not straightaway comment when reached by TechCrunch .

News of the emergency directive wasfirst reported by Cyberscoop last hebdomad .

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The emergency directive comes as Microsoft faces increasing scrutiny of its security practices after a great deal of intrusions by hackers of adversarial nations . The U.S. governance is heavily reliant on the software giant for host regime emails accounts .

Microsoftwent publicin January after identifying that the Russian hacking group intermit into some incorporated e-mail systems , including the email account of “ aged leaders team and employees in our cybersecurity , legal , and other functions . ” Microsoft said the Russian hackers were searching for data about what Microsoft and its certificate teams knew about the hackers themselves . Later , the technology giant say the hackersalso target other organizationsoutside of Microsoft .

Now it is known that some of those affected organizations admit U.S. politics agencies .

By March , Microsoft saidit was continue its efforts to expel the Russian hackersfrom its systems in what the party depict as an “ ongoing attack . ” Ina web log place , the society said the hacker were essay to use “ secret ” they had initially stolen in decree to access other internal Microsoft system and exfiltrate more data , such as reference computer code .

Microsoft did not immediately comment when asked by TechCrunch on Thursday what progress the company is make in remedy the onrush since March .

in the first place this calendar month , the U.S. Cyber Safety Review Board ( CSRB)concluded its investigationof an earlier 2023 rift of U.S. government emails attributed to China government - plunk for hackers . The CSRB , an independent body that includes representatives from government activity and cyber expert in the secret sector , fault a “ shower of security failures at Microsoft . ” Those tolerate the China - back hackers to steal a sensitive email key that permitted blanket access to both consumer and regime e-mail .

In February , the U.S. Department of Defensenotified 20,000 individuals that their personal information was exposedto the net after a Microsoft - host cloud email server was left without a password for several weeks in 2023 .

Russian spy keep hack into Microsoft in ‘ on-going attack , ’ ship’s company says