Ledger open source

A crypto security ecosystem blends physical devices and open software to put security first and give users control. Hardware wallets store private keys in secure element chips that are built to resist tampering and side-channel attacks. These devices sign transactions offline and keep your keys away from internet threats. The device screen is driven by the secure chip so you can always verify what you are signing. The companion software and many libraries are open source so developers and reviewers can inspect the code. Open sourcing the app layer and tools helps build trust because anyone can audit them. Some low-level firmware that speaks directly to the secure chip remains closed due to legal and supplier constraints. That choice trades full code transparency for stronger physical protections from the chip maker. Third-party security labs audit the operating system before releases to check for backdoors and flaws. A community of white hat researchers and internal teams probe the system to find weak points. The combination of audited software, hardware isolation, and external review reduces the attack surface for both remote and physical threats. Still, no system replaces cautious human behavior. Never share your secret recovery phrase or private keys. Beware of malicious smart contracts and phishing prompts that try to trick you into signing away funds. Using a hardware wallet with a third-party wallet can expose you to confusing signing requests. A genuine-device check helps you verify the authenticity of a device before use. Self-custody gives you full control of assets, and it also makes you the final defender. Think of the ecosystem as a fortress with many walls; each wall is built to keep lies and theft out. Transparency and protection walk a narrow line. The designers choose strong hardware barriers where the cost of exposure is highest. For users, that means you can benefit from verifiable software and hardened hardware while still accepting responsibility for safe key storage and careful transaction behavior.