Bad news first, folks. LastPass, our favourite password manager has been hacked. It's time to change your master password. The good news is that the passwords you have saved for other sites should be safe.
LastPass announced on its company blog that it had detected an intrusion on its servers. While encrypted user data (read: your stored passwords for other sites) was not stolen, the intruders did take LastPass account email addresses, password reminders, server per user salts, and authentication hashes. The latter is what's used to tell LastPass that you have permission to access your account.
According to LastPass, the authentication hashes should be sufficiently encrypted to prevent anyone from using them to access your account. However, the company is still prompting all users to update their master password that they use to log in to their LastPass account. If you use LastPass, you should do this immediately. If you share that master password with any other services, you should change it there, too.
We've talked about what happens if LastPass gets hacked before. As it stands, it doesn't seem that this hack resulted in any significant data losses for users. However, it's still important to take steps necessary to protect your account as soon as you can.
LastPass Security Notice [LastPass]