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Questions tagged [warrant-canary]

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84
votes
3answers
12k views

What is a Warrant Canary?

While browsing VeraCrypt's website I found its warrant canary. I tried to understand what it is and what its purpose was by reading corresponding Wikipedia article. To be honest I find it quite ...
7
votes
1answer
369 views

Does anyone provide per-user warrant canary

A recent trend is companies publishing warrant canary statements on their website saying something such as: We have not been compelled to disclose our private encryption key to any 3rd party This ...
38
votes
2answers
3k views

How to prove that a file was not created in advance

Sometimes we need to prove that a file was not created in advance - a good example is warrant canaries. The person releasing them may have been forced to sign the file with a future timestamp. For ...