A hardware wallet lives at the intersection of physical security and code. One mistake in firmware, the companion app, or supply-chain controls can put private keys at risk. So how do you know the Ledger Nano X (and similar devices) deserve trust? Security audits and open-source components provide two different kinds of evidence. Audits show an independent group examined parts of the stack. Open-source code lets anyone inspect and reproduce findings. Both are useful — and both have limits.
In my testing of multiple hardware wallets since 2018, I found that published audits and visible code greatly reduce unknowns. But they don't remove the need for basic protections like storing your recovery phrase safely (see seed-phrase-management). And yes, convenience features like Bluetooth require informed trade-offs (see connectivity-bluetooth-usb).
Audits vary in scope. A full hardware wallet audit will usually look at multiple layers:
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If you search for "ledger audit" or "ledger nano x security audit", you'll find reports and summaries with technical details. What should you look for?
How do you decide whether to trust an audit? Ask whether the report is from an independent firm, whether the code referenced is public, and whether fixes are traceable on version control.
Open-source means the code is publicly viewable. But not every component of a hardware wallet is usually open:
Open-source has benefits (auditability, reproducibility) and trade-offs (support, complexity). If fully open firmware is a priority for you, look for devices that advertise that explicitly — and compare via our comparison-table.
This is a practical "how to" you can use before trusting any device.
| Feature | Ledger Nano X (summary) | Open-source-focused wallet (generic) |
|---|---|---|
| Audit reports published | Third-party audits and researcher reports exist (scope varies) | Often audited; community scrutiny is high |
| Firmware open-source | Mixed/partial (some components public; core parts often closed) | Frequently fully open-source |
| Secure element | Uses a secure element for private keys | May use secure element or discrete secure designs |
| Bluetooth/USB | Bluetooth option increases convenience (trade-off) | Varies — many open models avoid wireless by default |
| Reproducible builds | Varies; check vendor docs | More likely to offer reproducible builds and build instructions |
This table is a feature-by-feature snapshot. For deeper comparisons, see comparison-nano-s-plus and comparison-table.
Who this generally suits:
Who should look elsewhere:
If you're unsure, consider multisig to spread risk (see multisig-setup).
Q: Can I recover my crypto if the device breaks?
A: Yes — recovery depends on your seed phrase or recovery phrase, not the hardware wallet itself. Follow the steps in recover-if-broken. Always verify recovery instructions before you act.
Q: What happens if the company behind the device goes bankrupt?
A: Your crypto still belongs to you as long as you hold your seed phrase. However, vendor support and firmware updates may stop. See our guide on company-bankrupt for practical preparations.
Q: Is Bluetooth safe for a hardware wallet?
A: Bluetooth adds convenience but increases the attack surface. If you prioritize minimal attack surface, consider USB-only workflows or air-gapped alternatives. See connectivity-bluetooth-usb.
Security audits and open-source components are signals, not guarantees. Audits show someone looked closely. Open-source code lets many people look. Both reduce mystery. In my experience, a device that combines third-party audits, clear patch timelines, and some public code is easier to trust — but your threat model matters.
Want to continue? Read the full hands-on Nano X review for unboxing, setup, and daily usage notes. If you're worried about firmware authenticity, follow our how-to-update-firmware-steps and review firmware-updates-verification.
And if you have questions about seed backups or passphrases, check seed-phrase-management and passphrase-25th-word. But remember: no single report replaces careful personal operational security.
What I've found over years of testing is that informed users make better choices. Start there.