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.
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.
Advanced CCTV systems, access control, and remote monitoring. Integrated security technology tailored for modern facilities and smart, proactive threat detection.
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.
Armed and unarmed options — matched to your site’s specific risk profile and requirements.
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.