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Microsoft says Kremlin-backed hackers accessed its source and internal systems


Midnight Blizzard is now using stolen secrets in follow-on attacks against customers.

THE PLOT THICKENS — Microsoft said that Kremlin-backed hackers who breached its corporate network in January have expanded their access since then in follow-on attacks that are targeting customers and have compromised the company's source code and internal systems. Microsoft said then that the breach allowed Midnight Blizzard to monitor the email accounts of senior executives and security personnel, raising the possibility that the group was able to read sensitive communications for as long as three months. Last week, the UK National Cyber Security Centre (NCSC) and international partners warned that in recent months, the threat group has expanded its activity to target aviation, education, law enforcement, local and state councils, government financial departments, and military organizations.

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