Microsoft says hackers viewed source code, didn’t change it Agencies January 1, 2021 California, Jan 1: Microsoft said on Thursday in a blog post that hackers tied to a massive intrusion of dozens of US government agencies and private companies snuck farther into its systems than previously thought, although the intrusion doesn't appear to have caused any additional harm. The company said the hackers were able to view some of the code underlying Microsoft software, but weren't able to make any changes to it. Microsoft played down any risk associated with the additional intrusion, noting that its software development relies on code sharing within the company, a practice called "inner source".