Who’s Cutting California Internet Cables? The FBI Has No Idea. Eleven times in the last year, fiber-optic lines have been snapped—cutting off 911 service in at least one community. Investigators are scrambling to figure out who’s behind the attacks. post 
Tuesday’s cut follow 10 others over the past year in cities in the Bay Area, including Fremont, Walnut Creek, Alamo, Berkeley, and San Jose, the FBI said in a statement this week. The first five attacks occurred on July 6 and 7 of 2014, all in the late-evening or early-morning hours. The next seven months were quiet, then the cutter (or cutters) struck again in February of this year, twice in one night. Then came three more cuts in June. If the FBI has detected any pattern, they’re not sharing it.