https://en.wikipedia.org/wiki/Article_8_of_the_European_Conv...
>A 2014 report to the UN General Assembly by the United Nations' top official for counter-terrorism and human rights condemned mass electronic surveillance as a clear violation of core privacy rights guaranteed by multiple treaties and conventions and makes a distinction between "targeted surveillance" – which "depend[s] upon the existence of prior suspicion of the targeted individual or organization" – and "mass surveillance", by which "states with high levels of Internet penetration can [] gain access to the telephone and e-mail content of an effectively unlimited number of users and maintain an overview of Internet activity associated with particular websites". *Only targeted interception* of traffic and location data in order to combat serious crime, including terrorism, is justified, according to a decision by the European Court of Justice.[23]