Thanks, this is a great story to illustrate why there's almost never any advantage to using a TRNG over a cryptographic-strength PRNG. That's also why Linux removed the blocking RNG from the kernel; there was no attack model where it gave more security.

Of course, PRNGs should still be seeded with real entropy from the outside world, but even if that fails at some point, your PRNG will still be producing effectively unpredictable numbers for a long time.