I found some good advice on one of the slides:
Make sure your computer is in a PRIVATE location.
Don’t walk away from it and leave your work exposed. Password protect your monitor screen – with a short cycle.
Save and log off if you’re going to be away for long.
From "What I've Learned the Hard Way" https://drive.google.com/open?id=1NI53QSEta45KNKdkdoGn-wvpyt...