Investment in oil and gas infrastructure has increased, and the industry is facing rapidly evolving threats to the security of its critical infrastructure. These threats are only becoming more frequent and more aggressive, as several prominent attacks on the oil and gas industry in recent years have highlighted. These are the factors driving the expenditure in the global oil and gas infrastructure security market. The research process includes analysis of secondary and in-house sources as well as interviews with key industry participants and end users. The study indicates the total global airport expenditure from 2012–2019.