They don't like competition.
Don't know what the issue is. But if it's a serious vulnerability, this is very irresponsible behavior.
Discussion
It is somewhat costly to exploit, but the fix is replacing one part with a drop in replacement. And this attack has existed since ~2005. Not informing users about this in general is pretty irresponsible.
Two decades. No way!
2005? Bitcoin related hardware? Is there a digit wrong?
No. I’m referring to the class of attack used.
Laser fault injection has existed since 2005 and defenses can be implemented for the protection of the chip, such as light sensors.
There have been 3 revisions to the ATECC chips and they still do not incorporate light sensors while your cheap credit card or transit pass does.