About Us

Started in 1974, ISM Security is the largest independent professional private security company in the Northwest Indiana and the Southeast Chicagoland area.  We develop customized security services that fit each of our client’s specific needs.

Unlike national firms, ISM Security is rooted in its community serving Northwest Indiana and the Southeast Chicagoland Area.  Our understanding of integrated security systems, our active management team, and our 24/7 proprietary dispatch center allows us to implement an efficient security solution across the entire security envelope.