Rather than use LastPass for password management, I would recommend that you consider using software programs from Thycotic, a Washington, D.C. based company. Thycotic does offer free trials and great customer and technical support. And unlike LastPass, Thycotic has not experienced any security breaches. Read the article from Forbes — http://www.forbes.com/sites/katevinton/2015/06/15/password-manager-lastpass-hacked-exposing-encrypted-master-passwords/
Or, read the article from Lifehacker — http://lifehacker.com/lastpass-hacked-time-to-change-your-master-password-1711463571
I’m just saying, if you are really worried about security, at least take a hard look at Thycotic.