Social networks are an integral part of the internet but there so many hackers and evil people waiting to take advantage of the social network users, especially on FB. With more than 800 million registered accounts, Facebook is the largest social network in use at the moment. It is also becoming a booming attack ground for malware authors and scammers. By taking advantage of the users’ trust in their network of relationships, they are spreading malicious code and sending spam messages. Most of the attacks that we currently see use social engineering tricks to spread their messages to thousands of users. Besides reposting spam messages to friends, this can lead to scam surveys or malicious sites.
Norton have been so kind as to produce this short summary that you should pay attention to (click to enlarge the image):