Leadership team

In 2013 he left Verizon to become a partner at Medina Capital, a private equity firm investing in high-growth cybersecurity software companies. Field sourced and led the acquisition of Cryptzone, a Sweden-based technology firm that was developing a breakthrough software-defined perimeter (SDP) technology and later became CEO. Field transitioned Cryptzone headquarters from Sweden to the U.S. and built out key functions including product management, marketing, operations and customer success. In 2017, Cryptzone was part of a multi-acquisition deal that formed Cyxtera, a secure infrastructure company bringing together retail colocation and security. Field became Chief Revenue Officer of Cyxtera and immersed himself into the burgeoning Zero Trust security movement. He was an early advocate of the strategy and led the company’s efforts to drive education and awareness about the limitations of legacy security technologies, like VPNs, in favor of a modern approach grounded in Zero Trust principles.

In January 2020, Appgate was spun out of Cyxtera to become a standalone cybersecurity company focused on capturing market share in the Zero Trust segment and creating the industry-leading secure access solution, Appgate SDP.

Prior to joining Appgate, Sivasankaran led global security sales at Splunk, provider of the Data-to-Everything Platform, with strong leadership in the security market. He drew on his experience in sales, consulting, business development and products to drive growth for the company’s security business. Before his Splunk tenure, Sivasankaran held various senior positions at security giant Cisco. There he was responsible for leading global sales and business development for the security business through managed security providers, strategic partners, and global alliances. His previous roles in Cisco security sales include serving as the global Field CTO for the $2B+ security business and leading global GTM strategy and business development. At Cisco, he also held strong consulting, product and technical leadership roles, including serving as a Distinguished Engineer.

Prior, Arango has served in sales leadership positions where he has had full accountability for revenue, profit, service delivery and client satisfaction. Before joining Appgate, Arango led the global sales efforts for Easy Solutions, which resulted in the company being acquired by Cyxtera in 2017. Prior to Easy Solutions, Alberto led sales at British Telecom as its Vice President of Sales for the Southern US where he developed the top performing sales team in the company. This achievement capped off four years of consistently leading sales projections while directing an industrious sales force with an outstanding customer satisfaction rate. Prior to BT, he led sales in Latin America for Internet Security Systems, which was acquired by IBM in 2006. Arango holds a B.S. in Marketing from Louisiana State University and a Masters of Business Administration in International Business from Mercer University.

Since 2011, Rodriguez has also served as a Partner and the CFO of Medina Capital. In that role, Rodriguez focuses on evaluating potential investments, fundraising, fund administration and financial guidance across the firm’s portfolio.

Rodriguez served in positions of increasing seniority at Terremark from 2005 until June 2011, most recently as Vice President of Financial Planning. In that role, he was responsible for the reporting of the financial and operational results of Terremark and its subsidiaries to its executive team and the investor community.

Prior to joining Terremark, Rodriguez held various positions at the Burger King Corporation focusing on worldwide valuation, process improvement, investment analysis and international fraud audits. Rodriguez started his professional career as part of the assurance practice at BDO Seidman LLP focusing on the firm’s financial services, technology, hospitality and aviation clients in South Florida, the Caribbean and Central America.

Rodriguez received his bachelor’s in Business Administration from the University of Notre Dame and his master’s in Business Administration from the University of Miami.

Preiss led communications at Cyxtera prior to the company spinning-off the Appgate business. Previous roles include head of marketing at Rsam, a GRC and security operations SaaS provider; Damballa, an advanced threat protection provider; and Dell Secureworks, the market leader in managed security services.

Preiss earned a BA in Communications from the University of Georgia. She has served as marketing mentor at the Advanced Technology Development Center and has won numerous industry marketing awards.

Before joining Cyxtera, Nord held roles at Verizon, where he led the integration of Terremark and Verizon Business Cloud and Managed Services business units into a single, global operations organization. His team of more than 1,800 employees were responsible for Service Delivery, Customer Support, Infrastructure Engineering, and Change Management across Verizon’s broad portfolio of services.

Prior to Verizon, Nord led the Infrastructure and Service Delivery organizations for Terremark, which included Infrastructure Engineering, 24x7 Customer Support, Professional Services, Managed Security, and Implementation.

Before his time at Terremark, Nord was with SAVVIS, where he was responsible for Service Delivery. During his nine years at SAVVIS, Nord lived and worked in Singapore and Reading, England.

Glazemakers is renowned for his extensive knowledge of software development, especially in the Software-Defined network and storage area. Prior to joining Appgate, he served as CTO of CloudFounders, a developer of advanced private cloud technologies for IT as a service (ITaaS) solutions.

He also served as Terremark’s CTO Europe (now part of Verizon), where he was responsible for the development of Enterprise Cloud. Throughout his career, Glazemakers has focused on the development of innovative solutions that increase the availability, security and scalability of mission-critical infrastructures. He holds a Master of Engineering, Telecommunications and Computer Networks from University Ghent in Belgium.

Garbis has over 30 years of product management, engineering, and consulting experience at security and technology firms, including RSA, where he focused on identity management and governance products. Garbis hold a CISSP certification, has a Bachelor’s degree in Computer Science from Cornell University, a High-Technology MBA from Northeastern University, and is a published author. He is also co-chair of the Boston chapter of the Cloud Security Alliance.

With over 25 years of executive federal government and commercial experience at both public and private companies, Mr. Taddeo oversees Appgate’s federal government business, working closely with sales and technical leadership to define and deliver Zero Trust solutions to meet the needs of the company’s public sector customers. He also serves as Appgate’s CISO, directing global security operations, crisis management and business continuity processes.

Previously, Mr. Taddeo was the CISO of Cyxtera, from which Appgate spun off in 2020, where he also held the position of President, Cyxtera Federal Group. He is the former Special Agent in Charge of the Special Operations/Cyber Division of the FBI’s New York Office. In this role, he directed over 400 special agents and professional support personnel conducting cyber investigations, surveillance operations, information technology support and crisis management. Previous responsibilities focused on FBI international operations, including service as a Section Chief in the International Operations Division, where he managed operations in Africa, Asia and the Middle East.

Mr. Taddeo received a B.S. in Applied Physics from Rensselaer Polytechnic Institute. After completing his studies, Taddeo served as a tank officer in the U.S. Marine Corps. In 1994 he earned a J.D. from St. John’s University. Upon graduation, he joined the law firm of Mound Cotton Wollan & Greengrass LLP in New York, where he practiced in the field of civil litigation until entering on duty with the FBI. Mr. Taddeo is a member of the New York State Bar and a graduate of the CISO Executive Program at Carnegie Mellon University

As Vice President of HR Operations at Cyxtera, Suarez-Aguiar led the global benefits program as well as serving as the HR operations leader for the Cybersecurity business unit handling employee relations, performance management, and organizational planning. Prior to Cyxtera, she ran the HR function at Easy Solutions. Suarez-Aguiar started her professional career at Terremark where she served in positions of increasing seniority in employee benefits. When Terremark was acquired by Verizon in 2011, she led the process to transition all employee benefits including managing employee communication and benefits education. At Verizon, she served as the HR Business Partner for the Colocation Business unit which involved consulting with business leaders to provide creative solutions to HR challenges surrounding compensation, employee relations, and organizational development.

Carolina received her BS in Business Administration with a concentration in Human Resource Management and her MBA from Florida International University.

Before joining Appgate, Lopez was Vice President of Global Operations for Cyxtera‘s fraud offering. His team of over 125 employees were responsible for Service Delivery, Customer Support, Infrastructure Management, and SOC Operations.

Prior to Cyxtera, Lopez led the Service Delivery organization for Easy Solutions, which included Customer Support, SOC Operations, Professional Services, and Risk and Compliance.

Lopez previously served as the Chief Information Officer for Marquis Bank, and as a Bank Secrecy Act/Anti-Money Laundering Manager for Ocean Bank, both community banks based in Florida. He holds a degree in Information Technology from the University of Miami’s School of Engineering.

Previously, Mr. Dale was Associate General Counsel of Cyxtera Technologies, Inc., Legacy Appgate’s former parent company, from May 2017 to January 2020, and Associate General Counsel of 3Cinteractive from July 2014 to April 2017. Prior to that, Mr. Dale was a corporate and securities associate at Greenberg Traurig, LLP from September 2010 to June 2014. He received his B.S. in Finance, B.A. in Economics, and M.S. in Finance from the University of Florida, and his Juris Doctorate from the University of Virginia.