Philippines police have arrested 58 people involved in an internet extortion network. They're accused of posting fake profiles to social network sites, luring mostly elderly men into exposing themselves in video chats which are then surreptitiously filmed and used to blackmail them. Sarb Sembhi is a web security expert with the firm Incoming Thought.

(Photo: A webcam is positioned in front of a danger sign. Credit: LIONEL BONAVENTURE/AFP/Getty Images)