Hackers gain unauthorized access through fake apps or website links. This is commonly know as phishing.When you click on a link to a Web site which looks identical to the Facebook log-in page you automatically enter your username and password. The hacker now has immediate access to your account Now all hacker has to do is use his newly found credentials (yours) to log in and send a personal message to all of your friends. When your friends click on the link he gains access to their accounts also to know more about phishing click Here
2. Use Strong Passwords
Do not use names of yourself, your spouse, parents, siblings or dog, or your birthday choose a password witch is at least 8 characters long use special symbols and numbers .if you find difficulty in selecting a password you can use this website www.strongpasswordgenerator.com which automatically generates a strongpassword for you, The website allows you to choose a password length and also gives you hints through which you can easily memorize the password
3. Take Precautions Using Mobile Apps.
If you use a mobile phone application to access your facebook account check to make sure the signal is encrypted.In India most operaters use an encrypted signal but be aware that other countries may not use a protected wireless signal. To avoid any problems always check with the mobile carrier you are accessing.
4.Change Your Password Regularly
The best way to protect your facebookaccount is to change your password Regularly .Change you password at least once a month
5.Don’t Friend Everyone
That “hot chick” whom you don’t know and looks like some Hollywood starlet might be a hacker.Avoid the person who doesn’t even have a profile pic, Friend people only you know
I hope you liked the post .If you have any Doubts please be free to comment