Our Hacker Challenge is now closed

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To prove Tresorit’s security, we posted a $50,000 bounty and invited leading universities and hackers to breach our service. Between April 2013 and October 2014, more than 1000 experts from 238 countries tried to win the prize. Participants represented the best talent at 49 organizations including MIT, Stanford, Caltech, and Harvard.

We cloned our production infrastructure to create the Hacking Arena, and granted participants the same access rights as Tresorit administrators to prove that even we can’t access our users’ stored data.

No one succeeded to date.

Don’t want to take our word for Tresorit’s security?
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(No spam, no sales - we will only use your contact details for communication about the Hacking Challenge)


The Hacker Challenge concerning our encryption is currently closed. But we encourage you to report any security issue or question to our security team. Please write to security (at) tresorit.com (Please find our PGP key here)