You're surfing the net at 3 a.m. Do you know where your cookies are? Richard Smith does, and he wants everybody to know how to lock their cupboards. As chief technology officer of the Privacy Foundation, it's Smith's job to uncover threats to online privacy and inform citizens of those threats; he's already made both Microsoft and RealNetworks rework software that secretly tracked user behavior. The Privacy Foundation and the Privacy Center, formed last July with funding from FirstData Corp., the Denver Foundation and longtime-cable-guy-turned-entrepreneur Peter Barton, are also contributing to the discussion and development of broader online ethics. So back off, hackers: The online sleuth is on the case.