eWeek Newsbreak, April 14, 2008

This week: Homeland Security Chief Michael Chertoff describes 'Manhattan Project' for cyber-defenses; Microsoft calls for initiative on Web security; Google to challenge Amazon by hosting Web apps; IBM turns on water to cool supercomputer; tech mergers enter bear market; HP unveils $499 mini-notebook; Google Maps gives close-up view of U.N. refugee camps; Eric Lundquist on tax time. Hosted by Ashley Daley.