This research book presents a sample of recent advances in information hiding techniques and their applications. It includes: Image data hiding scheme based on vector quantization and image graph coloringThe copyright protection system for Android platformReversible data hidingICA-based image and video watermarkingContent-based invariant image watermarkingSingle bitmap block truncation coding of color images using cat swarm optimizationGenetic-based wavelet packet watermarking for copyright protectionLossless text steganography in compression codingFast and low-distortion capacity acoustic synchronized acoustic-to-acoustic steganography schemeVideo watermarking with shot detection.