1. Never set your original pic as your profile pic, otherwise any of your friends or stranger can download it and use it to create a fake ID
2. Hide your friendlist otherwise hacker will send friend request to friends after making the fake ID of you.
3. Hide your email id or phone number otherwise anyone can use it in fake account.
5. Never told your personal info to any stranger otherwise he/she can use your detail to guess your password.
6. Block the suspected person so that he can not access your account.
If your have any personal account on faceboomor any other social networking website then you'll surely follow these tips to save yourself from insult