Bitcoin's cold-wallet attack has expanded to 4,500 addresses, with losses nearing $89 million. Galaxy Research flagged a third wave of sweeps tied to weak Coldcard-generated keys, with the attacker now targeting smaller balances and changing how funds are collected onchain.
The attack, which began in June, has seen the attacker exploit weak keys generated by the Coldcard hardware wallet. Galaxy Research warned that the attacker is now targeting smaller balances, making it more difficult for victims to recover their funds.
'The attacker is becoming more sophisticated, changing how funds are collected onchain,' said a Galaxy Research spokesperson.
The attack has raised concerns about the security of Bitcoin's cold-wallets, which are designed to be more secure than hot-wallets. However, the attack highlights the importance of using secure keys and best practices when generating and storing keys.
Bitcoin Cold-Wallet Security
The attack has also raised questions about the responsibility of hardware wallet manufacturers, such as Coldcard, to ensure the security of their products.
As the attack continues to unfold, it is essential for Bitcoin users to take steps to secure their cold-wallets, including using secure keys and best practices when generating and storing keys.
The future of Bitcoin's cold-wallet security remains uncertain, but one thing is clear: users must be vigilant and take proactive steps to protect their funds.
In the long term, the Bitcoin community may need to reevaluate its approach to cold-wallet security, considering new technologies and best practices to prevent similar attacks in the future.
Key questions
- What is a cold-wallet?
- A cold-wallet is a type of cryptocurrency wallet that stores private keys offline, making it more secure than a hot-wallet.
- How can I secure my Bitcoin cold-wallet?
- To secure your Bitcoin cold-wallet, use secure keys and best practices when generating and storing keys, and consider using a hardware wallet like Coldcard.
