Hackers can get on your facebook and look at your personal information.
Viruses can slow your computer down!
Make sure you dont tell anybody your password other wise they can get on your account and look at everthing you have on it keep it personal.
What is digital footprint?
Digital Footprint is when you post a picture of your self or somebody else, or put status of where you are. Colleges look at your profiles and make sure you dont have anything bad on it so they would be able to let you into there school. Even your bosses look at your facebook profile and twitter to see if they wont to hire you or not.