Concerns about quantum computers have resurfaced, with veteran cryptographer Justin Bonds warning that quantum computers could crack Zcash ($ZEC) and Monero ($XMR). in update Shared by Bons on X, the cryptocurrency researcher claims that these privacy-focused coins are at risk.
How quantum computing can de-anonymize privacy coins
In particular, Bonds said that quantum computers can be “anonymized”; Breaking elliptic curve cryptography Protect from public key. Generally, the public key is visible when the user spends funds from the wallet.
A quantum computer can solve the complex mathematics behind that key and derive the private key. This could allow malicious attackers or unauthorized individuals to associate transactions with real users and compromise transaction privacy.
$ZEC & $XMR Privacy is guaranteed to be broken within the next few years. ⚠️
If the public key is made public, quantum computing can remove all anonymization.
If long-term privacy is important to you, use a non-ZK-based mixer instead
Privacy is a human right. We must be aware of the risks!
— Justin Bons (@Justin_Bons) March 6, 2026
The threat posed by quantum computers remains a major concern across many blockchains, and Bonds proposes the use of mixed services that do not rely on zero-knowledge proofs. He argues that this is a surefire way to protect long-term privacy when “lives are at stake.”
To be clear, mixers are designed to pool and redistribute the coins of many users, making it more difficult to trace ownership of assets. This helps protect the identity of the owner.
Bonds suggests that some mixers may be better resistant to quantum computer attacks and should be adopted. This is especially important for individuals who rely on cryptocurrencies for life-or-death anonymity.
Experts say quantum threat to cryptocurrencies won’t happen soon
In February, cryptocurrency investment and research firm CoinShares contributed to the potential threat posed by quantum computers. Their research concludes that the threat to Bitcoin in particular is not imminent.
According to CoinShares, Bitcoin has the potential to: Quantum computing will take 20 years to prepare Even if there was a risk, only about 8% of the total supply could be at risk.
Bitfinex, a leading digital asset trading platform, took a similar stance. Bitfinex claims: Quantum threats are solvable It shouldn’t bother users too much.
