Denis Calderone joined J.S. Held in October 2022 following J.S. Held's acquisition of TBG Security.

Denis has worked in the information technology field for more than 20 years with the last 18 being completely dedicated to information security. He holds multiple security certifications and prides himself on viewing information security in a holistic light.

Denis’ key technical expertise is in network and application penetration testing, but mostly plays a CISO/CSO on-demand role these days for numerous consulting customers. He does not believe that the security challenges businesses face today can simply be met by installing point solutions or checking off regulatory audit check sheets. Each client faces unique problems and threats. An understanding of the industry threat profile, corporate culture, and risk tolerance must always be considered when addressing corporate security needs.

As partner, Denis led the technical consulting arm of TBG Security and performed the role of CSO. Prior to TBG Security, Denis worked for Exodus Communications as part of their Northeast Security Practice, and for Lycos as their information security engineer.