: Strategies to prevent unauthorized use and toll fraud, which are common in SIP environments. www.gsma.com Why It Matters Now With mobile infrastructure increasingly classified as Critical National Infrastructure (CNI)
In simple terms, FS.38 defines a that connect to mobile networks (2G, 3G, 4G, 5G, LTE-M, NB-IoT). It focuses on mitigating common, well-understood attack vectors that plague IoT deployments. gsma fs.38