Founded in 1967, OSS Inc. is a security guard service company with a reputation for performance, service and value.
We are a preferred provider to some of the most prominent corporations in the world and are proud to say that our first customer continues to do business with us after over 50 years. We are one of the largest privately held security firms in the nation, licensed to operate in Ohio, Pennsylvania and New York. OSS takes great pride in our ability to build long lasting relationships with our customers, allowing us to serve them to the best of our ability.