[TomV1971]

I’ve been on the receiving end where hobbyists were trying (and eventually succeeded) to hack our DRM scheme.

It was really fun to read the forums and see how, day by day, they managed to get closer. Since it wasn’t really crucial IP to begin with, we were rooting for the little guys to see how close they would get, secure in the knowledge that our algorithm was solid. :-)

The final exploit that granted them access was due to a supplier who replaced an earlier validated random generator with something not quite as random, which enabled replay attacks.