← Glossary
Five Eyes
Intelligence-sharing alliance of the US, UK, Canada, Australia, and New Zealand — relevant for jurisdiction-based privacy decisions.
Five Eyes is the intelligence-sharing alliance between the US, UK, Canada, Australia, and New Zealand, dating to a 1946 agreement. The Nine Eyes (adds France, Germany, Norway, the Netherlands, Belgium) and Fourteen Eyes (adds Italy, Spain, Sweden, Denmark) extend the network with more limited cooperation.
The relevance for privacy: services headquartered in these countries can be compelled by domestic legal process to share data, and that data may flow across the alliance via informal channels that bypass each country's individual privacy law. A US VPN cannot promise total opacity to UK intelligence the way a Swiss or Panamanian VPN can, even if the technical no-logs policy is identical.
Counterweight: jurisdiction-based threat modeling is often less important than the technical architecture. A Swiss VPN that logs is worse than a US VPN that does not. But for two equally well-built tools, jurisdiction can be a tiebreaker. Mullvad (Sweden), Proton (Switzerland), and ProtonMail's Swiss legal protection are commonly cited as positive jurisdictions.