Using Visual Challenges to Verify the Integrity of Security Cameras
Junia Valente, Álvaro A. Cárdenas · 2015
We propose a new way to verify the integrity and freshness of footage from security cameras by sending visual challenges to the area being monitored by the camera. We study the effectiveness of periodically updating plain text and QR code visual challenges, propose attack detection statistics for each of them, and study their performance under normal conditions (without attack) and against a variety of adversaries.