You might want to think twice before you let someone borrow your computer.The Ed Boot Report
The most obvious risk of allowing someone else access to your desktop is that they can impersonate you, using any app where you’re already signed in. They could send prank messages using your default email client, or profess your undying love for Justin Bieber using your logged-in Twitter account.
That’s annoying, but far from fatal.
But the situation becomes considerably worse if you use Google Chrome to save and sync passwords for easy logins at your favorite websites. An intruder who has unrestricted access to your computer for even a minute can view and copy all of your saved passwords just by visiting an easy-to-remember settings page: chrome://settings/passwords.
Jean-Pierre Paradis's Blog
Chrome
Security
Do you save passwords in Chrome? Maybe you should reconsider