“Bad news first, folks. LastPass, our favorite password manager (and yours) has been hacked. It’s time to change your master password. The good news is, the passwords you have saved for other sites should be safe.”
That line is a direct copy/paste from a LifeHacker.com article. If you want to read the whole article click here.
The bottom line is, you should change your master password right now…no not later, but now.