Wire · technology
AI Just Cut the Cost of Cracking Bitcoin's Encryption in Half. Is Q-Day Getting Closer?
◆ Sectors
◆ Source
◆ Verified
Fusion42 · 12 September 2026 · Fusion42 review
A new cryptography paper has halved the estimated computational cost of a critical quantum attack step on Bitcoin's encryption, significantly accelerating the timeline for when quantum computers might threaten Bitcoin's security.
This Wire brief sits within Fusion42's coverage of Quantum Computing, Crypto & Web3 and Cybersecurity, and 3 sources have reported it between 10 Sep 2026 and 11 Sep 2026.
◆ ◆ The Wire takeaway
Bitcoin security founders must accelerate development of quantum-resistant encryption; the cost of cracking Bitcoin with quantum machines just dropped sharply, bringing the threat closer than expected.
◆ Coverage
3 sources · first reported 10 Sep 2026 · latest 11 Sep 2026
◆ Related on Wire
◆ Topics