Generally, privacy is the right to be let alone, free from interference or intrusion. We may hear people say "I don't care about privacy because I don't have anything to hide," but that argument misses many important privacy concepts. Privacy is not just about confidentiality, but also about having control over our own domains and knowledge about what is done with those domains. Privacy is integral to free speech, openness in research, and the ethical treatment of individuals and institutional assets. Beyond compliance with laws, privacy is trust! It is a concept closely related to the US Constitutional concept of ordered liberty. This talk, "In Defense of Privacy," explains the importance of privacy to personhood and society. (from https://privacy.ucsd.edu/privacy/index.html)
