https://techcrunch.com/2020/12/17/fireeye-breach-solarwinds-federal-agencies/

It’s the nightmare scenario that has worried cybersecurity experts for years.

Since at least March, hackers likely working for Russian intelligence have embedded themselves without detection inside the unclassified networks of several U.S. government agencies and hundreds of companies. Sen. Richard Blumenthal appeared to confirm in a tweet that Russia was to blame, citing a classified congressional briefing.