Security News > 2022 > December > LastPass Admits to Severe Data Breach, Encrypted Password Vaults Stolen

The August 2022 security breach of LastPass may have been more severe than previously disclosed by the company.

The popular password management service on Thursday revealed that malicious actors obtained a trove of personal information belonging to its customers that include their encrypted password vaults using data siphoned from the break-in.

It's stored in a "Proprietary binary format" that contains both unencrypted data, such as website URLs, and fully-encrypted fields like website usernames and passwords, secure notes, and form-filled data.

These fields, the company explained, are protected using 256-bit AES encryption and can be decoded only with a key derived from the user's master password on the users' devices.

The company did not divulge how recent the backup was, but warned that the threat actor "May attempt to use brute-force to guess your master password and decrypt the copies of vault data they took," as well as target customers with social engineering and credential stuffing attacks.

"If you reuse your master password and that password was ever compromised, a threat actor may use dumps of compromised credentials that are already available on the internet to attempt to access your account," LastPass cautioned.

News URL

https://thehackernews.com/2022/12/lastpass-admits-to-severe-data-breach.html