Leadership

Meet the Team

AppGate brings together executives, thought leaders, and technology innovators from the cybersecurity industry.


Barry Field - Chief Revenue Officer

Barry Field

Chief Revenue Officer

Christopher W. Day - SVP & GM, Immunity

Christopher W. Day

SVP & GM, Immunity

Gregory J. Touhill - SVP, Federal

Gregory J. Touhill

SVP, Federal

Jeff Nord - SVP, Operations

Jeff Nord

SVP, Operations

Jonathan Simkins - President & CFO

Jonathan Simkins

President & CFO

Julie Preiss - SVP, Marketing

Julie Preiss

SVP, Marketing

Kurt Glazemakers - SVP, Engineering

Kurt Glazemakers

SVP, Engineering

Michael Aiello - CEO

Michael Aiello

CEO

Barry Field
Chief Revenue Officer

Barry Field brings extensive experience as a sales executive leading successful IT infrastructure and software-enabled technology sales organizations. Field previously served as CEO of Cryptzone, where he led the strategic vision, product development, international growth and expansion into new markets.

Field served in positions of increasing seniority at Terremark from 2007 until 2013, most recently as SVP of Global Sales. In that role, he was responsible for managing the global sales organization for the cloud, data center and managed security businesses. Verizon/Terremark’s total revenues at the time of Mr. Field’s departure exceeded $1.5 billion.

Since March 2013, Field has served as a Partner of Medina Capital with a focus on implementing and improving portfolio company enterprise sales and go-to-market strategies that drive revenue and increase business development through various channels.

Prior to joining Terremark, Field served in multiple sales leadership roles for Data Return, a managed services provider that was ultimately acquired by Terremark. Field’s early career included roles as a sales representative with iKnowledge in the Boston area, and as a District Sales Manager and Sales Representative with Wallace Computer Services in the New York City area. Field received his bachelor’s in Marketing from Fairfield University.

Close Modal
Barry Field - Chief Revenue Officer
Close Modal
Barry Field
Chief Revenue Officer

Barry Field brings extensive experience as a sales executive leading successful IT infrastructure and software-enabled technology sales organizations. Field previously served as CEO of Cryptzone, where he led the strategic vision, product development, international growth and expansion into new markets.

Field served in positions of increasing seniority at Terremark from 2007 until 2013, most recently as SVP of Global Sales. In that role, he was responsible for managing the global sales organization for the cloud, data center and managed security businesses. Verizon/Terremark’s total revenues at the time of Mr. Field’s departure exceeded $1.5 billion.

Since March 2013, Field has served as a Partner of Medina Capital with a focus on implementing and improving portfolio company enterprise sales and go-to-market strategies that drive revenue and increase business development through various channels.

Prior to joining Terremark, Field served in multiple sales leadership roles for Data Return, a managed services provider that was ultimately acquired by Terremark. Field’s early career included roles as a sales representative with iKnowledge in the Boston area, and as a District Sales Manager and Sales Representative with Wallace Computer Services in the New York City area. Field received his bachelor’s in Marketing from Fairfield University.

Barry Field - Chief Revenue Officer
Close Modal
Christopher W. Day
SVP & GM, Immunity

Prior to AppGate, Christopher Day was Chief Information Security Officer for Invincea, a next-generation endpoint security and anti-malware software company acquired by Sophos, Ltd in 2017. Before Invincea, Day was CTO for Packet Forensics and its subsidiaries that provide advanced cyber security products and large-scale threat and commercial intelligence services for government and the private sector.

Prior to Packet Forensics, Day was Chief Security Architect for Terremark, where he started the information security practice, including a professional services group and a managed security services operations center. After Terremark was acquired by Verizon in 2011 he was responsible for leading the Advanced Threat Intelligence and Mitigation Services team in the commercial and government sectors as well as the Verizon Terremark classified program delivery teams. He also led an advanced information security research and development team.

In March 2013, Day was appointed to the Defense Science Board, which provides guidance to the Secretary of Defense and other Department of Defense leaders on technical and strategic matters impacting national security. The White House National Security Council invited Day to participate as Control Staff for the 2012 National Level Exercise that focused heavily on a major cybersecurity crisis. He also served on the President’s National Security Telecommunications Advisory Committee’s (NSTAC) Secure Government Communications Subcommittee.

Day regularly speaks and lectures on cybersecurity topics and is a contributing author for a number of books and articles. He authored and co-authored four patents in cybersecurity and is a Fellow of the American Academy of Forensic Sciences. Day graduated from the University of Miami with a BS Magna Cum Laude in Physics and Mathematics and is member of Phi Beta Kappa.

Close Modal
Christopher W. Day - SVP & GM, Immunity
Close Modal
Christopher W. Day
SVP & GM, Immunity

Prior to AppGate, Christopher Day was Chief Information Security Officer for Invincea, a next-generation endpoint security and anti-malware software company acquired by Sophos, Ltd in 2017. Before Invincea, Day was CTO for Packet Forensics and its subsidiaries that provide advanced cyber security products and large-scale threat and commercial intelligence services for government and the private sector.

Prior to Packet Forensics, Day was Chief Security Architect for Terremark, where he started the information security practice, including a professional services group and a managed security services operations center. After Terremark was acquired by Verizon in 2011 he was responsible for leading the Advanced Threat Intelligence and Mitigation Services team in the commercial and government sectors as well as the Verizon Terremark classified program delivery teams. He also led an advanced information security research and development team.

In March 2013, Day was appointed to the Defense Science Board, which provides guidance to the Secretary of Defense and other Department of Defense leaders on technical and strategic matters impacting national security. The White House National Security Council invited Day to participate as Control Staff for the 2012 National Level Exercise that focused heavily on a major cybersecurity crisis. He also served on the President’s National Security Telecommunications Advisory Committee’s (NSTAC) Secure Government Communications Subcommittee.

Day regularly speaks and lectures on cybersecurity topics and is a contributing author for a number of books and articles. He authored and co-authored four patents in cybersecurity and is a Fellow of the American Academy of Forensic Sciences. Day graduated from the University of Miami with a BS Magna Cum Laude in Physics and Mathematics and is member of Phi Beta Kappa.

Christopher W. Day - SVP & GM, Immunity
Close Modal
Gregory J. Touhill
SVP, Federal

Brigadier General (Ret) Gregory J. Touhill, CISSP, CISM, serves as President of AppGate's Federal Division, which offers AppGate's market-leading cybersecurity capabilities to federal agencies and departments.

Under Touhill’s leadership, The AppGate Federal Division supports agencies across the federal government with a portfolio of secure infrastructure solutions delivered from a global footprint of world-class data centers, including six in the Washington, D.C. metropolitan area where the division is based.

Prior to joining AppGate, Touhill was appointed by President Barack Obama as the nation’s first ever Federal Chief Information Security Officer in 2016, where he was responsible for ensuring that the proper set of digital security policies, strategies and practices were adopted across all government agencies.

Brigadier General Gregory J. Touhill is a retired U.S. Air Force officer and combat veteran who served in several commands around the world including U.S. Transportation, Central, and Strategic Commands, and led the creation of the Air Force’s cyberspace operations training programs. He is a sought-after speaker and author within the information technology industry, where he is best-known for his “Cybersecurity for Executives: A Practical Guide,” which is used widely at colleges and universities across the country. He is also a faculty member at Carnegie Mellon University’s Heinz College, where he teaches Cyber Risk Management. Touhill is a recipient of numerous professional and education degrees from Harvard University’s John F. Kennedy School of Government, the Air War College, the University of Southern California and Penn State University.

Close Modal
Gregory J. Touhill - SVP, Federal
Close Modal
Gregory J. Touhill
SVP, Federal

Brigadier General (Ret) Gregory J. Touhill, CISSP, CISM, serves as President of AppGate's Federal Division, which offers AppGate's market-leading cybersecurity capabilities to federal agencies and departments.

Under Touhill’s leadership, The AppGate Federal Division supports agencies across the federal government with a portfolio of secure infrastructure solutions delivered from a global footprint of world-class data centers, including six in the Washington, D.C. metropolitan area where the division is based.

Prior to joining AppGate, Touhill was appointed by President Barack Obama as the nation’s first ever Federal Chief Information Security Officer in 2016, where he was responsible for ensuring that the proper set of digital security policies, strategies and practices were adopted across all government agencies.

Brigadier General Gregory J. Touhill is a retired U.S. Air Force officer and combat veteran who served in several commands around the world including U.S. Transportation, Central, and Strategic Commands, and led the creation of the Air Force’s cyberspace operations training programs. He is a sought-after speaker and author within the information technology industry, where he is best-known for his “Cybersecurity for Executives: A Practical Guide,” which is used widely at colleges and universities across the country. He is also a faculty member at Carnegie Mellon University’s Heinz College, where he teaches Cyber Risk Management. Touhill is a recipient of numerous professional and education degrees from Harvard University’s John F. Kennedy School of Government, the Air War College, the University of Southern California and Penn State University.

Gregory J. Touhill - SVP, Federal
Close Modal
Jeff Nord
SVP, Operations

Jeffrey Nord is Senior Vice President of Operations for AppGate. Prior to the firm’s spin-out, Jeff was the SVP of Service Delivery for Cyxtera’s colocation business.

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.

Close Modal
Jeff Nord - SVP, Operations
Close Modal
Jeff Nord
SVP, Operations

Jeffrey Nord is Senior Vice President of Operations for AppGate. Prior to the firm’s spin-out, Jeff was the SVP of Service Delivery for Cyxtera’s colocation business.

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.

Jeff Nord - SVP, Operations
Close Modal
Jonathan Simkins
President & CFO

Jonathan Simkins has more than a decade of experience as a financial and operations executive with vertical expertise in cybersecurity and financial services. Prior to a career in general management, he was an investment banker primarily focused on M&A and private placements for enterprise software and cybersecurity companies.

Simkins was most recently CFO at CyberGRX, where he served in a broad role also managing operations, product management, HR and legal. During his tenure, Simkins quadrupled the size of the staff, built back office operations, raised $63 million in capital, completed an acquisition, and grew ARR from zero to 8 figures.

Previously, Simkins was the CEO of Visum Cyber, where he was responsible for all aspects of the business and launched a sales ready SaaS product. The company was successfully sold.

Simkins also has served as an International Manager at HSBC, where he held several roles including strategic planning, leading the divestiture of the North American Insurance division, and optimizing the operations of the Investment Banking division’s Western Hemisphere regions.

Simkins earned an MBA from the University of Oxford and a Bachelor’s in Business Administration and Finance from the University of Washington.

Close Modal
Jonathan Simkins - President & CFO
Close Modal
Jonathan Simkins
President & CFO

Jonathan Simkins has more than a decade of experience as a financial and operations executive with vertical expertise in cybersecurity and financial services. Prior to a career in general management, he was an investment banker primarily focused on M&A and private placements for enterprise software and cybersecurity companies.

Simkins was most recently CFO at CyberGRX, where he served in a broad role also managing operations, product management, HR and legal. During his tenure, Simkins quadrupled the size of the staff, built back office operations, raised $63 million in capital, completed an acquisition, and grew ARR from zero to 8 figures.

Previously, Simkins was the CEO of Visum Cyber, where he was responsible for all aspects of the business and launched a sales ready SaaS product. The company was successfully sold.

Simkins also has served as an International Manager at HSBC, where he held several roles including strategic planning, leading the divestiture of the North American Insurance division, and optimizing the operations of the Investment Banking division’s Western Hemisphere regions.

Simkins earned an MBA from the University of Oxford and a Bachelor’s in Business Administration and Finance from the University of Washington.

Jonathan Simkins - President & CFO
Close Modal
Julie Preiss
SVP, Marketing

Julie Preiss has nearly a decade of cybersecurity marketing expertise. She has led marketing for high growth stage companies transitioning from start-up to exit. Her background includes creating and executing strategies that increase brand awareness, generate leads, create analyst champions and provide go-to expert resources for the media.

Preiss lead 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.

Close Modal
Julie Preiss - SVP, Marketing
Close Modal
Julie Preiss
SVP, Marketing

Julie Preiss has nearly a decade of cybersecurity marketing expertise. She has led marketing for high growth stage companies transitioning from start-up to exit. Her background includes creating and executing strategies that increase brand awareness, generate leads, create analyst champions and provide go-to expert resources for the media.

Preiss lead 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.

Julie Preiss - SVP, Marketing
Close Modal
Kurt Glazemakers
SVP, Engineering

Kurt Glazemakers is responsible for defining the strategy, development and roadmap of the next generation of AppGate's flagship Software-Defined Perimeter solution. Glazemakers was the independent technical expert within the Medina Capital investment team that exercised due diligence prior to the acquisition of Cryptzone in April 2014.

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.

Close Modal
Kurt Glazemakers - SVP, Engineering
Close Modal
Kurt Glazemakers
SVP, Engineering

Kurt Glazemakers is responsible for defining the strategy, development and roadmap of the next generation of AppGate's flagship Software-Defined Perimeter solution. Glazemakers was the independent technical expert within the Medina Capital investment team that exercised due diligence prior to the acquisition of Cryptzone in April 2014.

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.

Kurt Glazemakers - SVP, Engineering
Close Modal
Michael Aiello
CEO

Mike Aiello has more than 20 years of technology industry with expertise in cloud security, privacy, risk management, large scale infrastructure security, machine learning and fraud protection.

Aiello was most recently at Google, where he served as Director of Product Management for Google Cloud Platform Security and led the strategy for Google's enterprise cloud security products, including Google’s Key Management Services, Data Loss Prevention, Cloud Audit Logging, Cloud Access Transparency, Virtual Private Cloud Controls, Privacy, Data Governance and others. These products unblocked more than $1 Billion in revenue for Google Cloud in 2017 and 2018 and help secure thousands of businesses every day.

Previously, Aiello served as Chief Information Security Officer at Goldman Sachs where he helped secure and launch Marcus, the company’s digital retail bank, and established the company’s Consumer Trust and Technology Risk Committee.

Aiello earned an MBA from the University of Oxford and a M.S. and B.S. Computer Science, with a focus on Information Assurance, from New York University’s Tandon School of Engineering. He is the author of several patents related to cybersecurity and privacy.

Close Modal
Michael Aiello - CEO
Close Modal
Michael Aiello
CEO

Mike Aiello has more than 20 years of technology industry with expertise in cloud security, privacy, risk management, large scale infrastructure security, machine learning and fraud protection.

Aiello was most recently at Google, where he served as Director of Product Management for Google Cloud Platform Security and led the strategy for Google's enterprise cloud security products, including Google’s Key Management Services, Data Loss Prevention, Cloud Audit Logging, Cloud Access Transparency, Virtual Private Cloud Controls, Privacy, Data Governance and others. These products unblocked more than $1 Billion in revenue for Google Cloud in 2017 and 2018 and help secure thousands of businesses every day.

Previously, Aiello served as Chief Information Security Officer at Goldman Sachs where he helped secure and launch Marcus, the company’s digital retail bank, and established the company’s Consumer Trust and Technology Risk Committee.

Aiello earned an MBA from the University of Oxford and a M.S. and B.S. Computer Science, with a focus on Information Assurance, from New York University’s Tandon School of Engineering. He is the author of several patents related to cybersecurity and privacy.

Michael Aiello - CEO
Close Modal
Close Modal