Salt Typhoon: What Security Action Should Governments Take Now?

**Executive Summary:** The report outlines the Salt Typhoon campaign — a China-linked, state-sponsored APT operation that has infiltrated telecommunications and other critical infrastructure worldwide (affecting hundreds of companies across ~80 countries and reportedly stealing telephony metadata), and summarizes a 37-page joint U.S. government cybersecurity advisory providing detailed TTPs, indicators, and mitigation guidance for detection and eviction.