The threat detection systems market size was valued at USD 92.8 billion in 2025 and is projected to reach USD 162.9 billion by the end of 2035, rising at a CAGR of 5.8% during the forecast period, 2026 to 2035. North America industry is expected to hold the largest share of 40.5% by the end of 2035, owing to the region’s sustained government funding for the aviation border and defense security applications.