What It Does

Security services companies protect people, property, and assets through manned guarding, electronic surveillance, alarm monitoring, access control, and cybersecurity. The industry spans physical security guards posted at office buildings, retail stores, and events to sophisticated monitoring operations centers running 24/7 surveillance. Major players include Securitas, Allied Universal (owned by SOS International), Garda World, G4S (acquired by Allied Universal), and Brink's (cash logistics/security).

Defining Economics

Security services economics blend labor-intensive guarding with technology-driven monitoring:

• Guard bill rate vs. pay rate: Physical guarding is a spread business similar to staffing. Guards are typically paid $15–$25/hour; clients are billed $22–$45/hour. Gross margins on manned guarding are thin: 8–15%. The bill rate is constrained by client sensitivity to cost (security is often seen as a commodity) and by minimum wage floors that compress the spread from the bottom.
• Technology substitution ratio: The industry is undergoing a structural shift from human guards to electronic surveillance, remote monitoring, and AI-powered analytics. A single monitoring center operator can cover 20–40 camera feeds that would otherwise require 5–10 on-site guards. Technology-based services carry 30–50% gross margins versus 8–15% for manned guarding.
• Contract structure: Predominantly multi-year (2–5 years) with automatic renewals. Contracts specify guard hours, post requirements, and SLAs. Retention rates of 85–92%. Switching costs are moderate — the main barrier is the disruption of training new guards on site-specific procedures.
• Guard attrition: Annual turnover of 50–100% for frontline security officers is the industry's defining operational challenge. Each departure costs $3,000–$7,000 in recruiting, background checks, licensing, and training. At a 5,000-guard operation with 80% turnover, that is $12M–$28M in annual churn cost.

Dominant Business Models

Manned guarding (Securitas, Allied Universal, regional firms): Deploy security officers to client sites. Compete on reliability, compliance, and geographic coverage. Low margins (5–8% EBITDA) but massive scale — Allied Universal employs over 800,000 people. Revenue per employee $30K–$50K.

Technology and monitoring (Securitas Technology, Alarm.com, Verkada): Install and monitor electronic security systems — cameras, access control, intrusion detection, fire alarms. Higher margins (15–25% EBITDA) with recurring monthly monitoring revenue. Asset-intensive upfront but scalable.

Hybrid / integrated security (Securitas, Prosegur): Combine manned guarding with technology solutions under one contract. The strategic direction for most large players — use technology to reduce guard headcount while maintaining or improving security outcomes. Margins improve as the technology share of revenue grows.