Sensor noise camera identification: countering counter-forensics

In camera identification using sensor noise, the camera that took a given image can be determined with high certainty by establishing the presence of the camera's sensor fingerprint in the image. In this paper, we develop methods to reveal counter-forensic activities in which an attacker estimates the camera fingerprint from a set of images and pastes it onto an image from a different camera with the intent to introduce a false alarm and, in doing so, frame an innocent victim. We start by classifying different scenarios based on the sophistication of the attacker's activity and the means available to her and to the victim, who wishes to defend herself. The key observation is that at least some of the images that were used by the attacker to estimate the fake fingerprint will likely be available to the victim as well. We describe the socalled "triangle test" that helps the victim reveal attacker's malicious activity with high certainty under a wide range of con...

• Type: Conference
• Year: 2010
• Where: MEDIAFORENSICS
• Authors: Miroslav Goljan, Jessica J. Fridrich, Mo Chen
• Keywords: Camera's Sensor Fingerprint, Fingerprint, Forensic Engineering, Image, MEDIAFORENSICS 2010