From Universal Declaration of Human Rights (UDHR) accepted by the United Nations General Assembly on 10 December 1948 -------- Article 12 No one shall be subjected to arbitrary interference with his privacy, family, home or correspondence, nor to attacks upon his honour and reputation. Everyone has the right to the protection of the law against such interference or attacks. https://www.un.org/en/about-us/universal-de…
The 4th Amendment of the US Constitution is more legally relevant, but part of the function of courts is to carve out exceptions to laws like that for law enforcement purposes, so practically speaking such provisions are much less absolute than their wording tends to imply.