Security issues surrounding hardware wallets (cold wallets), which store cryptocurrency offline and disconnected from the internet, have emerged as a new controversy. This follows claims of a 'supply chain attack' in which a separate communication device was secretly inserted inside a wallet to leak users' recovery phrases (seed phrases) to outside parties.

Unverified Claim… "Unauthorized Electronic Module Found in Devices Distributed in Southeast Asia

A researcher at a hardware wallet manufacturer claimed that unauthorized electronic modules were discovered in some devices distributed through Southeast Asian sellers. However, it must be kept in mind that this may still be an unverified assumption.

Why It Matters… Risks That Network Isolation Alone Cannot Block

Cold wallets are a representative storage method that reduces the risk of online hacking by keeping private keys from being directly exposed to the internet. However, if the device itself was physically tampered with during the distribution process, network isolation alone cannot block all risks. This controversy prompts a renewed look at the security structure of cold wallets.

Preventive Measures Investors Can Take

Investors using hardware wallets need to examine both their purchase channels and the initial setup process. Basic preventive measures include:

• Purchase through the manufacturer's official sales channels.
• Do not enter your recovery phrase on websites or messengers.

If tampering is suspected on a device already in use, one option is to generate a new recovery phrase on a trusted new device and transfer assets there. In this case, reusing the existing recovery phrase as-is will not eliminate the risk of leakage.

Premature Conclusions Should Be Avoided

This case shows that the safety of cryptocurrency storage depends not only on encryption technology but also on manufacturing, distribution, and the user's initial setup process. Until official investigation results and the actual scope of damage are finally confirmed, one should not conclude that an entire sales channel has been compromised or that all hardware wallets are at risk. Since this could be merely a claim or rumor, a cautious approach is warranted until an official announcement is made.

[Cryptocurrency carries high risks, and security measures alone cannot prevent all losses. This article is not intended as investment advice; investment decisions and responsibilities rest with the investor. This article was written with the assistance of AI.]