d1
to avoid risks and threats on networking sites is to:
.never leave your computer when your logged on 
. don't click on links that your unsure of
. don't add people who you don't know 
.keep strong passwords that people wont guess
.get a good anti virus software and keep it updated 
. backing up your work 
.change passwords weekly 
. don't give people your details
. don't tell people when your leaving the house   
. don't give away usernames or passwords