"Russian State Hackers Breach Microsoft Systems, Steal Source Code"

Microsoft is still struggling to fend off Russian cyberspies who gained access to the company's systems late last year, with recent breaches exposing key company secrets, including source code for some programs. The hackers are associated with Russia's SVR intelligence agency, responsible for the SolarWinds hacking campaign of 2020. The extent of the stolen information is unclear, but the ongoing campaign is concerning due to Microsoft's role in U.S. government systems and advanced AI research. The hackers used password spraying to gain access to email accounts of key employees, and the problem has since worsened, with a tenfold increase in password spraying from February to March. U.S. agencies are closely engaged with Microsoft to understand and address the intrusion campaign.