MSS

Key facts (as of September 28, 2025) The big picture: from “quiet persistence” to a global telecom dragnet The past year has made clear that China’s cyber apparatus—centered on the Ministry of State Security (MSS) and buttressed by commercial contractors—has retooled for scale and stealth. A rare, globe‑spanning advisory issued by CISA, NSA, FBI, and allied cyber agencies documents how an MSS‑linked cluster overlapping with Salt Typhoon burrowed into telecoms and backbone providers across dozens of countries, abusing network edge devices and trusted interconnects more than individual laptops and servers. CISA Rather than showcase pricey zero‑days, the campaign chain‑exploited widely