Donjon

We are thrilled to announce the 2021 edition of our annual CTF, which will begin next week on November 30 10:00 CEST! We encourage participants to register and find about the details on

If you bought one or several of these NFTs and wonder if they are safe and secure, don’t worry, they are. You can directly skip the technical details to read the conclusion.

During the pandemic, access to our offices has been restricted. Bringing the 200 kg laser station at home was not an option, and conducting laser fault injection research with very limited access to

SSH is one of the protocols which are widely used on the Internet: developers use it to push code on a git server (such as GitHub), system administrators use it to connect to

A cryptocurrency wallet is a device or application able to manage cryptocurrencies and perform transactions for one or several cryptocurrencies. Its main security features are to store user’s private keys, and use them

The password generator included in Kaspersky Password Manager had several problems. The most critical one is that it used a PRNG not suited for cryptographic purposes. Its single source of entropy was the

Physical security threats appear at circuit-level, where an attacker can measure or physically influence the computation/operation performed by the circuit. Side-channel attacks exploit additional sources of information (physical observations), including timing information, power

This year the Donjon organized a Capture The Flag competition, where challengers had to solve many security-related challenges for three weeks. Now the competition is over, and it’s time for us to debrief!

At Ledger, we often hear about blockchains that take advantages of new breakthroughs in cryptography or computer science in general. For example, Ethereum 2.0 uses BLS signature algorithm instead of traditional ECDSA, Monero

At Ledger, we often hear about blockchains which enable their users to create programs that run “on the blockchain”, in a decentralized way. A very famous example of such a blockchain is Ethereum,

After doing some research on Transient execution CPU vulnerabilities against Intel SGX enclaves, we wondered if these vulnerabilities were practical in real life, with fully patched operating systems and default mitigations. We took

We are thrilled to officially announce the Ledger Donjon CTF, which will begin next week on October 28 10:00 CEST! We encourage participants to register and find about the details on the dedicated