FBI Director James Comey said the best way to prevent a webcam hack is by placing non-translucent tape over the lens. “There’s some sensible things you should be doing, and that’s one of them,” Comey explained at a Wednesday event at the Center for Strategic and International studies, according to The Hill. Placing tape over a computer’s webcam — a tactic he uses himself — will not stop a hacker from stealing images or files that are already on the system, but it will stop them from taking photos that could be used for blackmailing purposes.