Abstract: A security device is described that is simple and reliable. It includes a base member which is adhesively attached to the surface of a large object such as a motor vehicle. A protective knife-edged boss surrounds and protects the adhesive to defeat attempts to pry the base member off the vehicle. Housed within the base member is a steel tube, and a locking cable extends through the tube to secure personal property. A cavity is provided for easy installation of the tube within the base member, and a flange is attached to the tube for preventing extraction of the tube from the base member, as well as defeating removal of the base member from the vehicle. A three-way system of adhesion is employed which provides superior results.