Diligence Security Group is a veteran-owned security company dedicated to protecting people, property, and operations across California. We bring military-trained precision to every assignment — with structured protocols, real-time communication, and a team that treats your security as seriously as their own.
From government facilities and commercial properties to residential communities and construction sites, we don’t just provide guards — we deliver comprehensive security strategies tailored to the unique demands of each client.
Built for every environment — backed by structured protocols, real-time communications, and a team that takes your safety seriously.
Armed and unarmed officers providing on-site security. Uniformed, professional, and always alert — a visible deterrent and a trusted presence for your team and guests.
Expert risk assessment, vulnerability analysis, and strategic security planning. We evaluate threats and design custom protocols to protect your people and operations.
Certified programs for individuals and teams. From basic guard certification to specialized tactical response. We prepare professionals for real-world security scenarios.
Rapid and reliable patrol coverage across your property. Ideal for perimeter checks, after-hours response, and locations that benefit from a dynamic security presence.
Discreet, professional protection for high-profile individuals. From secure transport coordination to threat monitoring — comprehensive coverage that moves with you.
Our Security Officers are fully licensed, professionally trained, and held to the highest standard of conduct. They provide a strong, reassuring presence for your team and act as a serious deterrent to anyone who would threaten your environment.
Every officer is background-checked, state-certified, and continuously trained to meet our uncompromising standards of conduct and performance.
Military-grade procedures — from post orders and patrol schedules to incident response workflows; ensuring consistent, reliable coverage every shift.
Supervisors and clients stay informed through integrated reporting tools, direct lines, and real-time incident logs. Full transparency at all times.
From government agencies and commercial facilities to residential communities, our adaptability and track record set us apart from the competition.
Highly trained and certified armed personnel assigned to high-risk environments requiring elevated protection. This service is ideal for critical infrastructure, financial institutions, executive sites, sensitive facilities, and locations where immediate threat response is necessary.