Security Research

Donjon @ Ledger

We are the security research team at Ledger, dedicated to protecting your digital assets through cutting-edge security research, vulnerability discovery, and open-source tools.

Bug Bounty Program About Us Read the Donjon Blog

Security Bulletins

Technical details of past security issues, their impact, and available patches.

Threat Model

Comprehensive documentation of security objectives and mechanisms.

Tools Suite

Open-source security research tools for hardware and software analysis.

Bug Bounty

Report vulnerabilities and earn rewards for helping secure Ledger products.

Latest Blog Posts

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Apr 29, 2026 New

The Hidden Risk of Side-Channel Attacks on Post Quantum Cryptography

The Hidden Risk of Side-Channel Attacks on Post Quantum Cryptogra...

Apr 25, 2026 New

Inside the Ledger Donjon: How a White-Hat Hacker Lab Works

Inside the Ledger Donjon: How a White-Hat Hacker Lab Works...

Apr 8, 2026 New

Trade Different through Ledger Wallet™4.0

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Latest Security Bulletins

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LSB 021

Ledger Security Bulletin 021

Missing parameter validation during MCU firmware update

LSB 020

Ledger Security Bulletin 020

Ledger Live incorrectly parses some EIP-712 messages

LSB 019

Ledger Security Bulletin 019

Invalid addresses for certain miniscript policies

Found a vulnerability?

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