Finding hidden circles may improve social network privacy settings

Creating a computer program to find relationships in networks, such as Google Plus and Facebook, may help users more easily set up and maintain privacy settings, according to researchers.

Facebook optimizes privacy settings

Facebook has announced a number of "improvements" designed to make it easier for users of the popular social networking site to share posts, photos, tags and other content with a specified audience.

Facebook repairs critical security flaw

Facebook has reportedly fixed a critical security flaw that briefly allowed users to view the live chats of their friends and see pending friend requests.