Yup definitely. It was about SMCI too. It's not just you: at least two of us are having deja vu.

Different. In 2018 there was articles [0] talking about hacked Supermicro servers being in the wild that had (simplifying) extra ICs in their motherboard, like some short of supply chain attack.

But AFAIK, tangible evidence never surfaced. [1]

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  0: https://news.ycombinator.com/item?id=18176620
  1: https://news.ycombinator.com/item?id=19910537

I remember it too, but vaguely remember evidence of compromised boards

If you expect the BMCs of other vendors to be significantly more secure than the average home router from 2010 I have several bridges you may be interested in.

The story is called "The Big Hack" and was run by Bloomberg in 2018. All the major companies named in the story conducted investigations and never found anything, but the story was never retracted.

https://www.bloomberg.com/2018-the-big-hack

wonder who got short-options on SMCI in 2018 :)