Estimates for the core computation cost of a potential quantum-computer attack targeting bitcoin and ethereum have fallen to less than half of previous levels. The work focused on optimising parts of Shor\'s algorithm used to attack secp256k1, a cryptographic scheme shared by both networks. Researchers stressed this does not mean either system can be cracked with current quantum computers, but the faster-than-expected decline in costs is sharpening calls to bring forward security transitions.

Security companies are stepping up AI security while expanding beyond traditional security into AI governance, risk control and cost management. PRIBIT AI is shifting its identity from a security company to an AI governance and risk-control firm and has announced an execution strategy. F5 has introduced an AI gateway that applies consistent policies to AI requests and manages access and usage for models, agents and tools. Korean companies are also joining OpenAI-led cybersecurity cooperation initiatives.