![]() How long does decrypting passwords take?.So if your master password is shorter than twelve characters you should be more concerned about your passwords being decrypted. If it’s the former for you, your account has a considerably higher risk of being targeted.Īlso, when LastPass introduced their new password complexity requirements in 2018 they failed to enforce them for existing accounts. LastPass failed to upgrade some accounts from 5,000 to 100,100 iterations. You should especially check your password iterations setting. Happy holidays, everyone!Įdit (): As it turned out, even for a “nobody” there are certain risk factors. If their web application has been compromised nobody will be safe. Unless LastPass underestimated the scope of the breach that is. Should you hold the keys to your company’s assets however (network infrastructure, HR systems, hot legal information), it should be a good idea to replace these keys now. If you are a regular “nobody”: access to your accounts is probably not worth the effort. You should also consider whether you still want them uploaded to LastPass servers. If you are someone who might be targeted by state-level actors: danger is imminent and you should change all your passwords ASAP. But the executive summary is: it very much depends on who you are. I’ll delve into the technical details below. Fact is however: decrypting passwords is expensive but it is well within reach. It also prepares the ground for blaming you, should the passwords be decrypted after all: you clearly didn’t follow the recommendations. This makes it sound like decrypting the passwords you stored with LastPass is impossible. If you use the default settings above, it would take millions of years to guess your master password using generally-available password-cracking technology. The following statement from the blog post is a straight-out lie: In particular, they are rather misleading concerning a very important question: should you change all your passwords now? While this email and the corresponding blog post try to appear transparent, they don’t give you a full picture. We routinely test the latest password-cracking technologies against our algorithms to keep pace with and improve upon our cryptographic controls,” the blog continues.If you have a LastPass account you should have received an email updating you on the state of affairs concerning a recent LastPass breach. Because of the hashing and encryption methods we use to protect our customers, it would be extremely difficult to attempt to brute force guess master passwords for those customers who follow our password best practices. ![]() “ The threat actor may attempt to use brute force to guess your master password and decrypt the copies of vault data they took. ![]() Toubba said customers’ password vaults that, while accessed, are encrypted and can only be unlocked with the individual’s master password (not something LastPass stores). This related metadata included company names, end-user names, billing addresses, email addresses, telephone numbers and the IP addresses from which customers were accessing the LastPass service. In a blog post detailing the extent of the breach, CEO Karim Toubba said LastPass has determined that once the cloud storage access key and dual storage container decryption keys were obtained, the threat actor copied information from a backup that contained basic customer account information and related metadata. While no customer data was accessed during the August 2022 incident, some source code and technical information were stolen from our development environment and used to target another employee, obtaining credentials and keys which were used to access and decrypt some storage volumes within the cloud-based storage service.” “Based on our investigation to date, we have learned that an unknown threat actor accessed a cloud-based storage environment leveraging information obtained from the incident we previously disclosed in August of 2022. Today, it confirmed things are actually a hell of a lot worse than it thought. The company had determined, however, that an unauthorised party gained access to portions of the LastPass development environment through a single compromised developer account and took portions of source code and some proprietary LastPass technical information. “After initiating an immediate investigation, we have seen no evidence that this incident involved any access to customer data or encrypted password vaults,” it said. ![]()
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