ABSTRACT
From the tabloid magazines to main-stream media outlets, political campaigns, courtrooms, and the photo hoaxes that land in our email, doctored photographs are appearing with a growing frequency and sophistication. The resulting lack of trust is impacting law enforcement, national security, the media, e-commerce, and more. The field of photo forensics has emerged to help return some trust in photography. I will broadly describe some of the latest innovations for authenticating photographs, and I will describe in detail a suite of photo forensic techniques that exploit JPEG coding artifacts.