Ledger Reviews Sales Policies and Processes, Evaluates Device Anti-Tamper Protections

A recent report from Bloomberg has put hardware wallet supply chain security back in the spotlight. According to the report, Ledger SAS is reviewing its consumer device sales policies and internal processes after certain hardware wallets were allegedly modified with spyware, leading to an estimated $90 million in stolen crypto assets.

The company’s chief technology officer, Charles Guillemet, also said the firm is reassessing the anti-tamper protections used in its devices. Users who suspect that a device may have been altered were advised not to open the hardware wallet on their own before reading the company’s safety instructions, and to send suspicious devices back for inspection.

For the broader crypto industry, the incident is a reminder that self-custody is not only about private keys. It is also about the trustworthiness of the device, the purchase channel, the setup environment, and the user’s ability to detect abnormal behavior before signing a transaction.

Why Hardware Wallet Supply Chain Security Matters

Hardware wallets are designed to keep private keys offline, reducing exposure to malware, phishing websites, browser extensions, and compromised computers. But if an attacker can interfere with a device before the user receives it, the threat model changes.

A supply chain attack may involve:

• Tampering with packaging or device components
• Replacing firmware or adding malicious software
• Redirecting buyers through unofficial sales channels
• Social engineering users during setup
• Encouraging users to enter seed phrases into unsafe interfaces

This is why the security of a crypto hardware wallet depends on more than cryptography alone. It also requires secure manufacturing, controlled distribution, device authenticity checks, tamper-evident design, and clear user guidance.

Supply chain risk is not unique to crypto. Security agencies such as the U.S. Cybersecurity and Infrastructure Security Agency have long warned organizations to manage third-party and distribution risks through structured controls and verification practices, as outlined in its guidance on information and communications technology supply chain security.

The User’s Role: Verify Before You Trust

Self-custody gives users direct control over their digital assets, but that control comes with responsibility. When using any hardware wallet, users should treat the initial setup process as a critical security step.

Before moving significant funds to a new device, users should consider the following precautions:

1. Buy only from official or trusted channels
   Avoid unknown resellers, second-hand marketplaces, and heavily discounted listings. A lower price is not worth the risk of receiving a compromised device.

2. Inspect the package and device carefully
   Look for signs of resealing, damage, unusual labels, unexpected accessories, or instructions that differ from the official setup flow.

3. Initialize the wallet yourself
   A secure hardware wallet should generate the recovery phrase during setup. If a device arrives with a pre-written seed phrase, it should be treated as compromised.

4. Never type a recovery phrase into a website or app unless the wallet’s official process explicitly requires secure local input
   Recovery phrases are the master keys to crypto assets. Once exposed online, funds can be stolen immediately.

5. Test with a small amount first
   Before transferring a large balance, send a small transaction, verify the receiving address on the device screen, and confirm that the wallet behaves as expected.

6. Keep firmware and companion software updated
   Updates often include security patches, compatibility improvements, and protections against newly discovered attack methods.

These practices are especially important as crypto adoption grows and attackers increasingly target less technical users through phishing, fake support channels, and malicious purchase routes.

Anti-Tamper Protection Is Becoming a Core Industry Standard

In 2025, hardware wallet security is moving beyond the traditional question of “Are private keys stored offline?” Users now care about a broader set of protections, including:

• Secure element architecture
• Firmware verification
• Open-source transparency
• Transaction decoding
• Device authenticity checks
• Supply chain accountability
• Clear warnings for risky signatures
• Protection against blind signing

This shift reflects the evolution of crypto threats. Attackers no longer rely only on stealing seed phrases. They also exploit complex smart contract approvals, cross-chain bridges, malicious dApps, and compromised front ends. Chainalysis has repeatedly highlighted how stolen funds remain a major category in crypto crime, with attackers adapting their methods as the ecosystem matures, as discussed in its crypto crime research.

For users, this means a secure wallet should help them understand what they are signing. A device that only displays partial or unclear transaction information may leave users vulnerable to approval scams, address poisoning, and malicious contract interactions.

What To Do If You Suspect Device Tampering

If a hardware wallet looks suspicious, behaves unexpectedly, or arrives through an uncertain channel, users should avoid rushing into setup. A cautious response can prevent irreversible losses.

Recommended steps include:

• Do not enter or import an existing recovery phrase into the device.
• Do not transfer funds to addresses generated by the device.
• Do not disassemble the device unless official guidance specifically instructs you to do so.
• Document anything unusual, including packaging, labels, screens, setup prompts, and seller information.
• Contact the manufacturer’s official support channel.
• If funds may already be at risk, move assets from a known-safe wallet to a newly generated secure wallet.

Crypto transactions are final by design. Once funds are transferred to an attacker-controlled address, recovery is usually difficult or impossible. Preventive verification remains the strongest defense.

A Broader Lesson for Self-Custody

The latest hardware wallet security concerns do not weaken the case for self-custody. Instead, they reinforce a more mature understanding of it.

True self-custody is not simply holding a recovery phrase. It requires:

• Secure key generation
• Trusted device sourcing
• Verifiable transaction signing
• Safe backup practices
• Continuous awareness of phishing and malware risks

As more institutions, developers, and long-term holders move assets on-chain, the market will likely demand stronger security transparency from wallet providers. Users will increasingly compare products not only by supported chains or token coverage, but also by supply chain controls, open-source design, secure chip architecture, and transaction verification features.

Where OneKey Fits In

For users evaluating a hardware wallet in this environment, OneKey focuses on practical self-custody security: open-source software, secure hardware design, multi-chain support, and clear transaction interaction. These features are important because modern crypto users need more than offline key storage; they need a device that helps reduce mistakes during real on-chain activity.

No hardware wallet can eliminate every risk. But choosing a transparent, security-focused wallet, buying through trusted channels, and following careful setup practices can significantly reduce exposure to supply chain attacks and signing-related threats.

The key takeaway is simple: in crypto, security starts before the first transaction. It begins with how the device is sourced, verified, initialized, and used.