Dutch chipmaker NXP was hacked from about 2017 to 2020. Their response was to put a vague note in an annual report. But they never made it clear that they were seriously compromised for multiple years. NXP makes chips for iPhones, Apple Watches, cars, FIDO security keys, and transit passes.
Since it seems clear that NXP knows more than they have disclosed, I think it is worth putting pressure on the company to say more especially since their chips are used in security contexts.