Bitcoin security researchers are continuing to track the movement of funds connected to attacks involving Coldcard users.
Galaxy Research reported that the actor behind the third wave of Coldcard-related attacks had moved approximately 45% of the Bitcoin stolen during that wave.
Galaxy had previously identified approximately 1,779 BTC stolen from 190 victims and more than 8,600 addresses by mid-August.
The incident highlights a growing problem for crypto users: securing private keys is only one part of self-custody security.
Why Hardware Wallet Users Are Paying Attention
Hardware wallets are widely considered an important security tool because private keys can be kept away from internet-connected devices.
However, hardware wallets do not eliminate every risk.
Users can still lose assets through:
- compromised devices
- malicious software
- phishing
- seed-phrase exposure
- social engineering
- transaction-signing manipulation
The Coldcard-related incidents highlight how attackers can target the broader environment surrounding wallet users.
What Does Moving Stolen Bitcoin Mean?
When stolen Bitcoin moves on-chain, security researchers can often follow the transaction trail.
This can reveal:
- new destination addresses
- transaction timing
- consolidation patterns
- potential exchange deposits
- attempts to obfuscate funds
However, tracing Bitcoin does not necessarily mean investigators can immediately identify the person controlling the wallet.
Bitcoin provides public transaction records, but wallet ownership can remain pseudonymous.
Why 45% Is Important
Galaxy’s estimate that approximately 45% of the Bitcoin from the latest attack wave had moved indicates that the actor is actively managing the stolen funds.
That does not necessarily mean the Bitcoin has been sold.
Funds can be moved between private addresses without changing ownership.
However, continued movement can make the security incident more difficult for victims and investigators.
Self-Custody Remains a Major Responsibility
One of crypto’s defining features is self-custody.
Users can control their own assets without relying on a bank.
But that control also creates responsibility.
A lost recovery phrase can mean permanent loss.
A compromised device can expose sensitive information.
A malicious transaction can send funds to an attacker.
A security mistake therefore becomes a financial mistake.
Hardware Wallets Are Not Magic Shields
Hardware wallets can reduce certain risks.
They cannot protect users from every form of attack.
Users still need to:
- verify transaction details
- protect recovery phrases
- avoid phishing links
- use official wallet software
- keep firmware updated
- verify addresses
- avoid revealing seed phrases
Why Address Tracking Matters
Blockchain analytics has become an important component of crypto security.
Companies can monitor addresses associated with known exploits.
Exchanges can potentially identify suspicious deposits.
Investigators can track fund movements.
Victims can observe where stolen assets are moving.
This does not guarantee recovery.
But it can increase transparency.
The Limits of Blockchain Transparency
The public nature of Bitcoin transactions creates both advantages and disadvantages.
Investigators can see where coins move.
But they may not know the person’s identity.
Attackers can also use multiple wallets and services to complicate tracing.
Privacy-enhancing techniques can make tracking even more difficult.
Final Takeaway
Galaxy Research’s report that approximately 45% of Bitcoin from the latest Coldcard attack wave had moved demonstrates that the incident remains active on-chain.
The story also reinforces a broader principle:
Self-custody reduces dependence on intermediaries, but it increases personal security responsibility.
Hardware wallets can provide strong protection when used properly.
They are not a complete substitute for good security practices.