Global surveillance

Global mass surveillance can be defined as the mass surveillance of entire populations across national borders.

Its existence was not widely acknowledged by governments and the mainstream media until the global surveillance disclosures by Edward Snowden triggered a debate about the right to privacy in the Digital Age. One such debate is the balance which governments must acknowledge between the pursuit of national security and counter-terrorism over a right to privacy. Although, to quote H. Akın Ünver "Even when conducted for national security and counterterrorism purposes, the scale and detail of mass citizen data collected, leads to rightfully pessimistic observations about individual freedoms and privacy".

Its roots can be traced back to the middle of the 20th century when the UKUSA Agreement was jointly enacted by the United Kingdom and the United States, which later expanded to Canada, Australia, and New Zealand to create the present Five Eyes alliance. The alliance developed cooperation arrangements with several "third-party" nations. Eventually, this resulted in the establishment of a global surveillance network, code-named "ECHELON" (1971).