Since the firm's founding in 1978, Mr. Gezelter performed formal and informal review of security related issues in the OpenVMS™ environment. His activities have included:

• reviews of system security, including applications environments for OpenVMS systems in environments from manufacturing and realtime control to financial environments.
• speaking on systems security management and internals of OpenVMS and related products at DECUS Symposia in the United States, Canada, Switzerland, France, and Turkey. Presentations have included both one hour sessions and full day seminars.
• authoring several articles on OpenVMS systems management, internals, and related areas. Articles have been published by Digital Systems Journal, Digital News, and Hardcopy.
• contributing the "Internet Security" chapter to The Computer Security Handbook, 3rd Edition, published by John Wiley & Son.