There are auditing features within LastPass, at the Enterprise level, more info here:https://support.logmeininc.com/lastpass ... s-lp010040
I haven't tested this personally because I am not the Administrator for our Enterprise.
Another auditing feature (that I am able to access) is a history of my own sessions. This is useful if you think someone else may have your master password.
Within the LastPass Plugin menu, go to More Options, Advanced, Other Sessions
That will show your Active LastPass Sessions, so you can see if there are any sessions that you don't recognise