This book constitutes the thoroughly refereed post-proceedings of the 11th International Workshop on Digital-Forensics and Watermarking, IWDW 2012, held in Shanghai, China, during October/November 2012. The 42 revised papers (27 oral and 15 poster papers) were carefully reviewed and selected from 70 submissions. The papers are organized in topical sections on steganography and steganalysis; watermarking and copyright protection; forensics and anti-forensics; reversible data hiding; fingerprinting and authentication; visual cryptography.