Security & Investigation Services

Investigation and Security Services (NAICS 5616) covers private security guards, armored-car services, investigation services, and the broader corporate-security industry. Major US security-services companies include Allied Universal (privately held, the largest US security-services company at ~$22 billion in revenue, formed via multiple consolidating acquisitions including G4S in 2021), Securitas (Swedish, the largest globally), GardaWorld (Canadian, also expanded via consolidation), Brink's (NYSE: BCO, the largest cash-handling and armored-car company), and Loomis (Swedish). The investigation and corporate-security side includes Pinkerton (Securitas-owned), Kroll (now part of Duff & Phelps / Teneo), FTI Consulting (NYSE: FCN), and the major accounting firms' forensic-and-investigation practices (Deloitte Forensic, EY Forensic, PwC, KPMG). Combined US private-security-services revenue exceeds $60 billion annually with industry employment of approximately 1.1 million security guards plus the smaller investigative and security-consulting workforces. The industry has been navigating the structural shift from physical-security-only to converged physical-and-cyber-security.

AI is being applied across security operations. Surveillance-video analytics is the largest AI application — Verkada (privately held, ~$3 billion valuation), Ambient.ai, Coram AI, Eagle Eye Networks, Avigilon (Motorola Solutions-owned), and the major manufacturer-side platforms (Axis, Hikvision, Dahua, Bosch) provide AI-powered video analytics for retail loss-prevention, perimeter-security, and event-detection. Access-control AI (HID Global, Avigilon Alta, Verkada Access) integrates badge-and-biometric systems with AI-driven anomaly detection. Investigation AI (Palantir Gotham at Pinkerton and similar engagements, Magnet Forensics for digital forensics, Cellebrite for mobile-device investigations) accelerates fraud and corporate-investigation work. Corporate-security operations centers (GSOCs) at major corporations increasingly use AI for incident triage, social-media-monitoring (LifeRaft, Liferay-with-Liferaft, Dataminr), and travel-security alerts. The newer wave: humanoid security robots (Knightscope, Cobalt Robotics) augment guard work in select environments; OpenAI / Anthropic-backed AI for forensic-document review accelerates investigation work.

Security-guard employment in the US is approximately 1 million workers, predominantly low-to-mid-wage frontline labor. Guard roles face moderate AI-augmentation pressure but limited near-term displacement — physical presence remains the defining service. Higher-skill guard roles (executive-protection, armored-car drivers, specialized facility security) are stable. Surveillance-monitoring roles (the GSOC operators watching camera feeds) face the most direct AI-augmentation — vision-AI handles the routine "watch for movement" work, freeing human operators to handle exceptions. Investigation roles at Pinkerton, Kroll, FTI are heavily AI-augmented but headcount-stable. Cybersecurity roles (in-scope for some converged operators) are growing. New roles: AI-surveillance-operations specialist, GSOC-AI analyst, robotics-security supervisor, converged-security-AI architect (for organizations consolidating physical and cyber security functions). The Verkada, Ambient.ai, and AI-surveillance category has consolidated significant venture funding and is reshaping enterprise security expectations.