What is a warrant canary?

A warrant canary is a posted document stating that an organization has not received any secret subpoenas during a specific period of time. If this document fails to be updated during the specified time then the user is to assume that the service has received such a subpoena and should stop using the service.

Warrant Canary Examples:

1. https://proxy.sh/canary
2. https://www.ivpn.net/resources/canary.txt
3. https://www.vpnsecure.me/files/canary.txt
4. https://www.bolehvpn.net/canary.txt
5. https://lokun.is/canary.txt
6. https://www.ipredator.se/static/downloads/canary.txt

Related Warrant Canary Information

• Warrant Canary Frequently Asked Questions
• Companies and organizations with warrant canaries
• Warrant canary criticism by Bruce Schneier and an example of a law against warrant canaries.