Here are a couple of articles about the Solarwinds hack that messed up a lot of companies. The first is relatively soon after the event and the second is later. Putting them here for future reference.
https://www.wired.com/story/solarwinds-hack-supply-chain-threats-improvements (Dec 2021)
https://www.wired.com/story/the-untold-story-of-solarwinds-the-boldest-supply-chain-hack-ever (May 2023)