every time we join a social network fill a pro file,send messages, post a comment or share a video, we create footprint that is potentially public and permanent.others can do anythings with our personal data.for example, our full name, workplace, family and other details.here are general tip to protect our personal data. first of all, use privacy controls on our favorite websites and use them if the websites let us control the information we share with our friends. second, we should comment only with people we know offline. sometimes, someone tries to add us as a connection. if we don't really know them, we should block them. third, be mindful for posting personal data. we should not post everything to the public. it's impossible to take it back once we post something online. finally, ask our friends not to post photos of us or our family without permission. these tips can protect our personal data. try to do that