Guardian Security Services, a locally owned security company, was founded by its current management in 1975 and has established itself as the security leader in Chicagoland. We provide customized, cost-effective programs to commercial properties, corporate headquarters, public utilities, residential communities, financial institutions, college campuses, industrial, logistics, manufacturing facilities, and more. We believe the secret to our success is no secret at all, simply Guardian’s unique combination of: Employee integrity, quality, professional performance, and overall commitment to excellence. Client Focus and the recognition that our success begins and ends with satisfied clients. Partnerships with our clients that are open, honest, mutually beneficial, and long-term business relationships. Professionalism that provides the highest level of service with integrity. Benchmarking our services and expertise against industry leaders allows us to continuously raise the bar and strive for excellence in every facet of the industry.