Xerox PARC chip shatters on command (techxplore.com)

Good reason to avoid buying anything with that chip in it.

I would have expected the military to mount a bomb under the processor. Or a blob of thermite or something. + with thermite there wouldn't even be pieces. Why complicate things?

I’d speculate this is an extreme anti-reverse engineering feature. An unauthorized person opens the case and all the important chips turn into a 10,000 piece glass puzzle.