LastPass – LastPass Login Information on Multiple Browsers

lastpassprivacy

I use Lastpass on two different browsers (Mozilla and Google Chrome) with two different ID's on each browser. I don't use the Firefox ID on Chrome and vice versa. But today something strange happened. After using Firefox and logging into Lastpass, my Firefox ID was automatically filled in Chrome. How is this possible?

AFAIK, Chrome cannot read anything that is stored by Firefox extensions or cannot read Firefox cookies. So is Lastpass really connecting my IP address with my login ID?

From this answer it looks like there is a ~/.lastpass directory which is used by the Firefox extension. So it looks like the Chrome extension is reading data from it. Is that possible? I'm on Linux.

EDIT: From this answer on the Chrome discussion forums it seems very clear that Chrome extensions cannot read any external file, and can only access its local storage. I'm intrigued more now.

Best Answer

There's a setting in LastPass preferences called "Share login state between other browsers". It's located in the advanced section (list on the left). Uncheck it & save the settings.