https://apnews.com/f51e53523312b87121146de8fd7c0020 > BOSTON (AP) — The sprawling, monthslong hacking campaign deemed a grave threat to U.S. national security came to be known as SolarWinds for the company whose software update Russian intelligence agents stealthily seeded with malware to penetrate sensitive government and private networks. > Yet it was Microsoft whose code the cyber spies persistently abused in the campaign's second stage, rifling through emails and other files of such high-value targets as then-acting Homeland Security chief Chad Wolf — and hopping undetected among victim networks.