The threat actors can work to decrypt customers’ vault data offline where there won’t be a trail leading back to them and customers won’t receive any notification of unauthorized access, if the threat actors manage to decrypt stolen vault data. Rather than attempting to access the encrypted information within customers’ vaults directly on LastPass servers where security measures could rebuff repeated attempts at unauthorized access, the threat actors are free to employ all sorts of methods to break through the encryption on their own terms. It’s important to note that the threat actors now have their own copy of LastPass customers’ vaults. This unencrypted information could enable threat actors to determine the websites on which LastPass users have accounts. However, unlike the vaults of some password managers like Bitwarden, LastPass customer vaults contain some unencrypted data, including the website URLs associated with each vault entry. While threat actors now possess copies of these vaults, all passwords, usernames, secure notes, and form-filled data remain encrypted. These vaults are where customers’ passwords and other credentials are stored. The stolen data includes customer account information and metadata, such as company names, usernames names, billing addresses, email addresses, telephone numbers, and IP addresses, as well as vault data. Thanks to these keys, the threat actors were able to gain unauthorized access to the storage container and make copies of the backup data stored within. The hackers used information stolen in the August breach to target a LastPass employee, likely in a phishing attack, and acquire the access and decryption keys for the company’s cloud storage container. However, the target of the more recent breach was a cloud storage service containing off-site backups of customer data. The breach in August affected the LastPass development environment, which didn’t contain any customer information. Now, the CEO of LastPass, Karim Toubba, has published an update revealing that the hackers managed to access customers’ password vaults.
Shortly after this follow-up breach, the company disclosed that threat actors had stolen customer information, but didn’t specify what information had been stolen. Hackers then used the stolen information to breach LastPass again at the end of November. Back in August of this year, the password manager LastPass suffered a security breach that resulted in the theft of proprietary technical information and portions of the company’s source code.
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