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Online user privacy is a delicate issue that has been unfortunately overlooked by technology corporations and especially the public since the birth of the internet. Many online businesses and services such as web search engines, retailers, and social network sites exploit user data for profit. There is a misconception among people about the term "privacy." Usually, people think that privacy is the ability of an individual to isolate themselves or that it is a person's right to control access to their personal information. However, privacy is not just about revealing secret information; it...

The digital information age has evolved with numerous opportunities and new challenges. The goal of this book is to provide a framework based on watermarking techniques that can be used for verifying the integrity of a digital image along with the recovery of the intentionally or unintentionally distorted digital image. The efficient and hybrid techniques have been developed in this book which makes trade-off between three contradicting properties of watermarking; imperceptibility, robustness, and capacity. The watermarking techniques given in this book are able to answer these questions, i)...