Businesses and institutions understand that their responsibilities and security requirements have changed dramatically over the last few years.Today, threats and risk come in all shapes and sizes. No longer is it acceptable for companies to settle for less than the absolute highest standards of quality when it comes down to protecting their people, facilities and assets.

Pioneering the highest standards has been an important principle of our history. When Edward Klosterman Sr. founded Shield Security in 1964, he relied on his formidable and distinguished background and career as an agent of the Federal Bureau of Investigation (FBI) to establish the company’s core values and direction. From that day forward, Shield has strived to not just meet its clients’ expectations, but to exceed them.

We protect the assets of our Southern California neighbors and businesses by nurturing long-term relationships built on trust. We go the extra mile for our clients, many of which have been with Shield for over 20 years.