LastPass hack: online storage vault tells users to change master passwords

Web service that promises secure central storage for passwords says people's main accounts may have been compromised

A web service that promises to help people keep their various passwords secure has reported hackers may have obtained some user information - although not actual passwords - from its network.

The company was advising users to change their LastPass master passwords, which are used to retrieve encrypted individual passwords for the users' other online services or accounts. But it said they did not need to change individual passwords for all their accounts.