SIS Group Enterprise is a private security firm in India, Australia and New Zealand. It was set up in 1985 by Ravindra Kishore Sinha who is an Indian billionaire businessman and journalist. which is now led by his son Rituraj Sinha as Group Managing Director. SIS Group is one of the largest manpower security firms in the Indo-Pacific region with sales in excess of ₹15,000 crore. The company offers Security, Cash Logistics, and Facility Management Services in India, Australia, and a few Asia-Pacific regions. Currently, Ravindra Kishore Sinha is the Chairman and Rituraj Kishore Sinha is the group managing director of the SIS Ltd. Wikipedia