Join the Challenge Now !


A unique cryptocurrency focused Capture The Flag. Open to all people
wishing to measure themselves against the challenges of Ledger security
experts & researchers.

Hardware wallet, blockchain, cryptography, reverse engineering, embedded security...
will you be able to break through the defense of the Donjon and get the reward?

Not registered yet?

Create your account and begin challenges to reach the top of the scoreboard.


Register

Join our official Discord channel to talk with us.
Before getting started, check out the rules.



1st prize $500 in cryptocurrencies + 1 limited edition Ledger Backup Pack

2nd prize $300 in cryptocurrencies + 1 limited edition Ledger Backup Pack

3rd prize $100 in cryptocurrencies + 1 limited edition Ledger Backup Pack

4th - 10th prizes 1 limited edition Ledger Nano X



This event is brought to you by Ledger Donjon,
the security team at Ledger.