![]() This figure of $6 USD per 2³² guesses allows us to calculate the cracking costs for any known password strength. An attacker, on average, only needs to try half of all the possible passwords, and had we not provided hints, it would have cost the attackers $4,300 USD to crack the three-word passwords in our challenge. The short answer is that it costs the password cracker about $6 USD for every 2³² (4.3 billion) guesses of a 1Password account password. After paying out a total of $30,720 USD, we have a better picture. ![]() The challenges were designed to simulate the threat to a user who has had their 1Password data stolen from their own machines (1Password data captured from our servers are protected by your Secret Key and so aren’t subject to this sort of attack). It’s been a while since we ran our challenge, How strong should your Master Password be?, in which we gave out prizes to the first people who could figure out the passwords in carefully constructed challenges.
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