Malware from social networking sites hit 40% of users, up from 21.2% in April 2009 and 36% in December of 2009. Phishing is also on the rise, reaching 43% of social networking users in December 2010. More than half the companies surveyed for the report allow unlimited access to Facebook, Twitter and Linked In. The lion’s share of sites distributing malicious malware are hosted in the U.S., with France (10%) and Russia (8.72%) coming in second and third.”]
Source: https://www.csoonline.com/article/2126631/social-networking-security-threats-taken-too-lightly.html