For video to be useful as an official record or even as evidence, it must be transmitted and stored in a manner that will ensure that it cannot be tampered with. Unlike with other evidence, video needs to pass through a network infrastructure in order to move from the field to a secure storage area—and there is no reason to assume that the networks that police use are any safer from hackers than the networks banks, government, and ordinary citizens use. Fortunately, there are ways for police departments to protect video and keep it intact as part of a chain of evidence.