San Franciscans just got an all-too-real demonstration of what it's like when hackers attack urban infrastructure. The city's Municipal Transportation Agency has confirmed that the Muni station computer system was hacked, leading officials to open fare gates, shut down ticket kiosks and otherwise make rides free on November 26th. Trains themselves were unaffected, and payments resumed on the morning of the 27th. It's not certain exactly who was responsible (besides "Andy Saolis," likely a pseudonym), but Hoodline understands that the intruders were using ransomware to hold the city hostage until it paid the equivalent of $73,000 in bitcoin. Screens at terminals said "you hacked, ALL data encrypted" and pointed the city to a Russian email address to arrange payment.