In the past couple of days, several LastPass customers posted on the official forum claiming that they can't open their vaults anymore after following the company's instructions to reset their multifactor authentication. LastPass informed customers about the upcoming change in emails, but has since then also prompted users to reset their multifactor authentication preferences in the used applications.Īt least some LastPass customers have found themselves in reset loops that they can't escape from. The new default number of password iterations has been set to 600,000 for new accounts and for accounts that update the existing iteration count. This login hash is then submitted to LastPass and used to authenticate the customer. The number of rounds are used to create the encryption key and another round ofPBKDF2 is done to create the login hash. ![]() LastPass explains on a support page that it uses the "PBKDF2 function implemented with SHA-256 to turn the master password of its customers into the encryption key. ![]() The increased number of iterations improves the protection of customer's master password, effectively making it more difficult for attackers to discover the correct master password.
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