Signals Intelligence (SIGINT) Market Size, Growth, Forecast to 2035

According to a research report published by Spherical Insights and Consulting, the global signals intelligence (SIGINT) market size was worth around USD 18.43 billion in 2025 and is predicted to grow to around USD 33.41 billion by 2035 with a compound annual growth rate (CAGR) of 6.13% from 2026 to 2035.