METI Orders an Emergency Cyber Audit at 24 Utilities Over Anthropic's Claude Mythos: Japan Between the US and Europe
On May 1, Japan's METI met infrastructure operators from the power and gas sectors, and Economy Minister Akazawa asked electricity companies to run emergency system inspections and report within a month. The order covers 24 critical-infrastructure operators in the power sector. The trigger was Anthropic's Claude Mythos Preview, announced April 7, which surfaced a 27-year-old bug chain in OpenBSD's TCP SACK code among others. The UK's AISI reached a more measured verdict. How Japan's penalty-free approach compares with CISA's OT principles and the EU's NIS2.