A free utility called System Explorer is like a combination of the Windows Task Manager and System Resource Monitor with an application uninstaller, security monitor, startup manager, and more tossed in for good measure. In Short Circuits: Domains housed on shared servers can be added to email blacklists if there's just one bad actor on the server. This can affect people who use their internet service provider's email system, too. There's a way to avoid the problem and it costs nothing to implement. • Four and a half years ago, Equifax suffered the largest data breach in history. Recently victims who signed up for free credit monitoring finally received instructions for how to use it. Twenty Years Ago: The Foveon digital camera sensor was intended to change everything. The technology is still in use, but not as a major player.