LastPass has been breached for a second time this year. The cloud-based password manager suffered a data breach in August 2022, which resulted in some source code and proprietary technical information being stolen.
LastPass suffers another data breach
Karim Toubba, the CEO of LastPass has published a notice on the company's blog to inform users about the security incident. The article says that LastPass recently detected some unusual activity within a third-party cloud storage service that it uses. This storage server is shared between LastPass and GoTo (formerly known as LogMeIn).
Once it noticed the security breach, LastPass alerted law enforcement about it. The company also began an investigation of its own, again in partnership with a security firm called Mandiant to discover the origin of the attack, and trace its scope. Its investigation has led the company to believe that the new security incident is directly related to the August 2022 data breach. To recall the incident, hackers had gained access to LastPass' development environment for 4 days. But the forensic report published by the password manager service had claimed that no user data had been stolen during that attack.
This time, however, LastPass mentions that the threat actors exploited the information from the previous hack to gain access to some elements of LastPass' customer data. But the company says that the hackers did not steal the passwords of its users, because of LastPass' Zero Knowledge, i.e. the technology that it employs to encrypt user data. The service does not store its decryption keys on its servers, these are saved on the end user's device, the vault is end-to-end encrypted. Since LastPass itself does not have access to the encryption key, this likely means that the contents of the password vault are safe.
If that is the case, and I'm purely speculating here, if the passwords are safe, what else could the hackers have stolen? The only other data that LastPass could have has got to be related to customer's personal information which is related to their subscription details, e.g. stuff that you would find on an invoice. I'd still advise users to keep an eye on their mail inbox to check if any unauthorized login attempts have been made, it's the logical thing to do.
LastPass has not disclosed further details about the breach. It is still investigating the scope of the incident to determine what user data was accessed. We can expect another update from the company that explains more about the hack, and how it affects users.
Meanwhile, Toubba has confirmed that the company's services are fully functional. He also reassured LastPass users that they are monitoring the situation to detect and prevent further malicious activity by the hackers.
Security incidents like these are the reason why some people prefer to use offline password managers like KeePass, because the only person who has access to your vault is you. You can't blame them for that, though one could argue that any website and service is open to attacks, it is the strength and quality of the security protocols that they use that actually matters. That said, if you have enabled 2-factor authentication for the accounts that you have stored in the cloud-based password manager, you should be relatively safe from attacks.
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