At the height of his powers, Jeanson James Ancheta felt unstoppable. From his home in Downey, Calif., the then-19-year-old high school dropout controlled thousands of compromised PCs, or “bots,” that helped him earn enough cash in 2004 and 2005 to drive a souped-up 1993 BMW and spend $600 a week on new clothes and car parts. Full Story