Ellen Nakashima reports:
Russian government hackers engaged in a sweeping series of breaches of government and private-sector networks have been able to penetrate deeper into Microsoft’s systems than previously known, gaining access to potentially valuable source code, the tech giant said Thursday.
The firm previously acknowledged that it had inadvertently downloaded a software patch used by Russian cyber spies as a potential “back door” into victims’ systems. But it was not known that the hackers had viewed the firm’s source code, or the crucial DNA of potentially valuable, proprietary software.
Read more on the Washington Post.