Trend Micro: Pagers are still in use in hospitals and industrial plants. Some companies are using pagers without encryption, and attackers can listen in and interfere with the communications. Pagers can offer a great deal of sensitive information that can be harmful in the wrong hands. The company advises organizations to upgrade to encrypted systems with asymmetric keys, and to make sure that there’s an authentication system in place. Some pagers still needed for consistent, reliable communications that work over greater distances, through steel and concrete, and in emergency situations.”]