Everyone needs to learn about Third Party Doctrine:
> "The third-party doctrine is a United States legal doctrine that holds that people who voluntarily give information to third parties—such as banks, phone companies, internet service providers (ISPs), and e-mail servers—have "no reasonable expectation of privacy" in that information. A lack of privacy protection allows the United States government to obtain information from third parties without a legal warrant and without otherwise complying with the Fourth Amendment prohibition against search and seizure without probable cause and a judicial search warrant."
If you want to learn the legal reasoning for this, check out "Habeas Data: Privacy vs. the Rise of Surveillance Tech" by Cyrus Farivar. It's a great and horrifying book.
> "The third-party doctrine is a United States legal doctrine that holds that people who voluntarily give information to third parties—such as banks, phone companies, internet service providers (ISPs), and e-mail servers—have "no reasonable expectation of privacy" in that information. A lack of privacy protection allows the United States government to obtain information from third parties without a legal warrant and without otherwise complying with the Fourth Amendment prohibition against search and seizure without probable cause and a judicial search warrant."
Ref: https://en.wikipedia.org/wiki/Third-party_doctrine
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If you want to learn the legal reasoning for this, check out "Habeas Data: Privacy vs. the Rise of Surveillance Tech" by Cyrus Farivar. It's a great and horrifying book.