You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract FTC's Vladeck: 'Lots of Concerns About Social Networks' Data Security Is Top Priority; Praises Self-Regulatory Efforts So Far By Edmund Lee, Published on May 16, 2011 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.