The security of social networks and the people who use them every day has become a serious concern for enterprises and consumers alike. Kaspersky: Social networks are the perfect place for communications that actually substitutes for traditional channels like e-mails, phones and personal meetings. Social media are breaking the borders it s a bridge that connects nations (with some restrictions) The security is a universal problem for cyberspace, not only social networks: near 72 percent of all email traffic is SPAM, more than a quarter of all mobile applications are used just once.
Source: https://threatpost.com/social-media-qa-eugene-kaspersky-111312/77210/