Tech companies like Intel, Nvidia, Microsoft, and Cisco installed SolarWinds malware
Along with the Department of Energy, Homeland Security, and more - but each group was compromised to different extents
News - FireEye
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Supply chain attack on SolarWinds used to breach US government agencies
Russia is thought to be behind the huge hack
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Cybersecurity firm FireEye hit by 'state-sponsored' attack
The FBI seems to think Russia is behind it