BlockBeats news, on December 25, according to Cointelegraph, experts from institutions such as Argentum AI and Coin Bureau stated in interviews that the threat of quantum computing to cryptocurrency in 2026 is still at a theoretical stage, rather than imminent. Clark Alexander, head of Argentum AI, stated that the commercial application of quantum computing in 2026 is expected to be extremely limited. Nic Puckrin, co-founder of Coin Bureau, stated that 90% of quantum threat theories belong to marketing, and there are at least another ten years before a computer capable of breaking existing cryptography appears.

Nevertheless, experts point out that the public key cryptography relied upon by blockchain networks like Bitcoin has potential risks. Sofiia Kireieva from Boosty Labs pointed out that the Elliptic Curve Digital Signature Algorithm (ECDSA) used for private and public keys is the weakest link, while the vulnerability of the SHA-256 hash function is relatively low. Ahmad Shadid, founder of O Foundation, stated that the reuse of addresses significantly increases the risk of being compromised.

Currently, about 25% to 30% of BTC (approximately 4 million coins) are stored in addresses where the public keys have been exposed, making these addresses more vulnerable to attacks from quantum computers. Sean Ren, co-founder of Sahara AI, warns that the real threat in 2026 is not a system collapse, but rather that attackers are gathering as much encrypted data as possible to decrypt it when future technology matures. Leo Fan, co-founder of Cysic, describes this as a 'collect now, decrypt later' attack scenario. To address potential threats, the crypto community has taken action. Qastle announced in November plans to provide quantum-level security for hot wallets by upgrading the underlying cryptography. Experts recommend that users avoid reusing addresses and migrate funds promptly when quantum-resistant wallets become available. Although there will be no quantum doomsday in 2026, quantum computing will become a significant risk factor in the field of crypto security.