LinkedIn is a popular networking site with hiring authorities and is very effective to find information security work by building professional relationships and joining affinity groups and associations. Facebook is the largest of the social networking sites, followed by Facebook and Twitter. LinkedIn also comes in handy for screening potential employees and what others have to say about them. Twitter offers employers an alternative to big online job boards as a way to find and attract a large pool of candidates, says Barbara Massa, VP global talent acquisition, McAfee.”]