Social networks can be dangerous to people in various ways. For example: you are going on holiday abroad, ten thousand kilometers from home. You are so happy that you decide to share it on Facebook, like ‘I’m finally going on holiday!! Been waiting all year!’. You might think ‘What’s bad in posting such things. What’s the point of this article?’. The point is that, how can you know, who’s going to read this. Maybe some thief, for whom your trip is an opportunity to rob your house? Better think twice before posting anything or Facebook, because there were many situations, when people really regret doing that.