>I would say the odds are zero because that's the likelihood of being able to brute-force anything in the key space.
you are correct at first pass, but it's a fact wallets have been cracked many times, perhaps at least 100s of millions of dollars. The "keyspace" for the cracked wallet is a subset of the nominal keyspace - the much smaller space covered by either a flawed random number generator (RNG), or the whole brainwallet fiasco, or a RNG where a seed is crackable (e.g. milliseconds since 1970 or unix epoch - some cracks, whitehat, have used this method). That's all what we know in the whitehat space, surely other tricks exist in the blackhat space
you are correct at first pass, but it's a fact wallets have been cracked many times, perhaps at least 100s of millions of dollars. The "keyspace" for the cracked wallet is a subset of the nominal keyspace - the much smaller space covered by either a flawed random number generator (RNG), or the whole brainwallet fiasco, or a RNG where a seed is crackable (e.g. milliseconds since 1970 or unix epoch - some cracks, whitehat, have used this method). That's all what we know in the whitehat space, surely other tricks exist in the blackhat space