If you haven't yet turned on two-factor security, here's another reason you should. Go and do it right now. Google even has an iPhone/Android auth app that work

If you haven't yet turned on two-factor security, here's another reason you should. Go and do it right now. Google even has an iPhone/Android auth app that works offline (if you need your email on a plane, for example. Also, enable two-factor security in your password manager (I use LastPass, they have a free version).