After more than four years of waiting, the federal government's most far-reaching cybersecurity reporting law is finally close to taking real, enforceable shape. The Cybersecurity and Infrastructure Security Agency (CISA) has told stakeholders it intends to publish the long-delayed final rule for the Cyber Incident Reporting for Critical Infrastructure Act (CIRCIA) in September 2026 — and once that happens, the clock starts ticking toward mandatory reporting for hundreds of thousands of U.S. businesses.