Peter Gutmann reported some interesting studies in his keynote talk at Shmoocon this year. It's probably available on Ustream or the Shmoocon site. In short, s

Peter Gutmann reported some interesting studies in his keynote talk at Shmoocon this year. It's probably available on Ustream or the Shmoocon site. In short, sometimes darkness helps. Consider a tall glass office building. If all the lights are out, nothing stands out to a security guard more than a flashlight waving around in the darkness.