Security Vulnerability - US law enforcement possesses private keys to 120 thousand bitcoins due to a randomness flaw [1] - The vulnerability affected over 220 thousand wallet addresses [1] - The private keys were generated by a flawed pseudo-random number generator (PRNG), making them more predictable [1] Law Enforcement Action - Law enforcement agencies obtained the private keys not through hacking, but by discovering a flaw in the key generation process [1]