Hackers took down the computer system for San Francisco's Muni metro line

Fares were free on Saturday. Internet hackers crashed the computer system of San Francisco's Muni rail system this week, knocking ticket kiosks offline and giving riders a free ride. A spokesperson told San Francisco's CBS affiliate that the system "opened the fare gates as a precaution to minimize customer impact." Rides were free all day on Saturday, into Sunday morning. Sources told San Francisco's CBS affiliate on Saturday that the system had been hacked for days. Spokespeople didn't respond...