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Quantum Computing: A Real Threat to Crypto in 2026?

USAThursday, December 25, 2025
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The Quantum Threat

In 2026, quantum computing remains a hot topic in the crypto world. Some fear it could crack the codes protecting Bitcoin and other digital currencies. Big tech companies are investing heavily in quantum research, making this concern more tangible.

Expert Advice: No Need to Panic (Yet)

Experts assure that quantum computers aren't yet capable of breaking crypto. The real threat lies in what hackers are doing now—collecting encrypted data to crack later when quantum technology advances.

The Weakness in Crypto Security

Bitcoin and other blockchains rely on public-key cryptography to secure transactions. If a quantum computer can derive private keys from public ones, it could steal funds. The most vulnerable part of this system is ECDSA, used to sign transactions.

Challenges Facing Quantum Computing

Despite the hype, big tech is still far from building a quantum computer powerful enough to break these codes. They face massive hurdles in physics and engineering. Some experts argue that classical computers may pose a bigger threat to crypto than quantum ones.

The Real Danger in 2026

The immediate risk isn't that Bitcoin will break—it's that hackers are already gathering data to crack later. They're collecting public keys, which could be used with a quantum computer to find private keys.

How Many Bitcoins Are at Risk?

Around 4 million Bitcoins are at risk because their public keys are already exposed. To stay safe, crypto users should:

  • Avoid reusing addresses
  • Be ready to switch to quantum-resistant wallets

The Future of Crypto in 2026

The crypto world isn't doomed, but the threat of quantum computing is becoming more real. The question is no longer "if" but "when."

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