- 1928: Olmstead v. United States decided that wiretapping without judicial approval is illegal, and that one cannot be convicted off of evidence from an unapproved intrusion of privacy.
- 1948: The Universal Declaration of Human Rights is ratified, asserting privacy rights for people worldwide as displayed in Article 3.
- 1965: In the case, Griswold v. Connecticut, the U.S. Supreme Court declares the right to privacy within marital relations after Griswold provided marital counselling through the company, Planned Parenthood.
- 1967: Katz v. United States decides that a citizen has entitlement to Fourth Amendment protection from being recorded, whether or not the intrusion invades the physical space around them.
- 1968: The Federal Wiretap Act of 1968 is passed, forbidding the nonconsensual intrusion of “wire, oral, or electronic communications”.
- 1972: A case regarding the storage of sensitive information relevant to prescriptions called Whalen v. Roe established that the power was in the hands of the physicians since it would not impair a citizen’s want or need for said prescriptions.
- 1974: The Federal Privacy Act of 1974, passed in the United States, prohibits federal agencies from disclosing personal information with names or symbols.
- 1986: The Electronic Communications Privacy Act, also passed in the U.S.A., tries to prevent government access to private communications.
- 1998: China initiates the Golden Shield Project, a national censorship program outlawing pro-democracy websites, any opinion pieces against the Chinese government, any Taiwanese organization, and crime-related sites.
- 1999: The Swiss Federal Constitution is adopted, in which Article 13 guarantees the right to privacy within mail and telecommunications, and is protected from the misuse of personal data.
- 2001: The court case case, Kyllo v. United States declares that the use of thermal imaging technology that is typically used to take down marijuana-growing operations is an invasion of privacy.
2001: The Patriot Act is passed in October, allowing law enforcement to conduct investigations, collect/facilitate private data, and orchestrate surveillance on anyone who is considered “a threat to national security” without consent.