Google's Training Its AI to Be Android's Security Guard

When Adrian Ludwig describes the ideal approach to computer security, he pulls out an analogy. Computer security, he says, should work like the credit card business. A credit card company, he explains, doesn't eliminate risk. It manages risk, using data describing the market as a whole to build a different risk profile (and a different interest rate) for each individual. Computer security, Ludwig believes, should work in much the same way. "The model of good and bad--white and black--that the security community prescribes?" he says.