While Target confirmed today that debit PIN numbers were compromised in a massive cyber attack that put customer data on the black market, the FBI is currently investigating an apparent real-world attack on a San Jose power plant from earlier this year. According to Foreign Policy, its possible that two unidentified gunmen fired military-style weapons at transformers at the San Jose PGE substation in an act some see as sabotage. The gunmen attacked the facility on April 16th, taking down ten transformers and three transformer banks at the time. There are ways that a very few number of actors with very rudimentary equipment could take down large portions of our grid, John Wellinghoff, chairman of the Federal Energy Regulatory Commission, said at a recent event sponsored by Bloomberg.