Our Team

Associate for partnerships

Paris Gyparakis

Paris Gyparakis, JD. is an Associate for Partnerships. Paris assists on legal and financial due diligence on select companies, including coordinating with outside research firms to provide business related updates, intellectual property attorneys, and potential industry related acquisition opportunities for portfolio companies. Prior to Cyberis Mr. Gyparakis worked at Winston & Winston, PC., specializing in a variety of complex commercial, bankruptcy, and litigation matters, as well as Kantor Davidoff P.C., in the corporate and transactional department. Mr. Gyparakis currently serves as the Senior Research Editor to the Journal of International Business and Law, and has written mainly in the areas of international economics and finance. Mr. Gyparakis graduated magna cum laude from The Ohio State University where he studied Classical Literature and Psychology, and was a post-baccalaureate scholar at the University of Athens School of Philosophy. Currently. Mr. Gyparakis serves as the Monica Gollub Endowed Academic Scholar for the Maurice A. Deane School of Law at Hofstra University.

GENERAL COUNSEL

Mark Goldenberg

Mark Goldenberg, General Counsel - Mark Goldenberg is an experienced corporate attorney, concentrating his practice in the areas of capital markets, venture capital and investment transactions, and corporate governance. Mr. Goldenberg is General Counsel at GreenHills Ventures. Prior to Cyberis Group, he was of counsel at David Lubin & Associates, where he specialized in securities offerings, corporate transactions, and compliance with SOX, Dodd-Frank, FINRA and SEC rules. Before that he was a corporate associate at Snow Becker Krauss, working on a wide range of corporate and securities matters. Mr. Goldenberg holds an Israeli law degree as well as an American law degree from Cornell Law School and is admitted to the New York Bar.

Co-chief executive officer and Business Development

James Grundvig  

James Grundvig has 25 years of project management and consulting experience on complex projects. He is a technology journalist having published in Law.com, the Huff Post, and the Financial Times Foreign Direct Investment magazine. James Grundvig manages Cyberis Legal, a subsidiary of Cyberis Group, focusing on providing legal research and outsource legal for companies and select law firms. He is an author of three books and several technical and market-driven reports on the Digital Age, including a competitive analysis on the cybersecurity landscape. James has setup business development portals, author platforms, and the founder of a data analytics mobile startup.

Senior Ai Technology, Phd Candidate

Anna Nicolaou

Anna Nicolaou is an Senior AI consultant and PhD candidate in Data Science with experience in machine learning, data analytics, and AI-driven research. Her work focuses on applying artificial intelligence to solve complex real-world problems through data-informed solutions, predictive modeling, and emerging technologies including Cyber Security.

She holds a Master in Computer Science (Magna Cum Laude) from the New York Institute of Technology, and is passionate about innovation and data science.

Senior Advisor, Advisory Committee, investor and board member

Emanuel Martinez

Emanuel Martinez is the General Managing Director of GreenHills Ventures and GreenHills Cap Partners is a private investment holding company managing several investment arms headquartered in New York City and Luxembourg. Mr. Martinez manages the firm's investment activities, portfolio management activities, strategic partnerships, and mergers and acquisitions with a primary focus on the sectors in which the firm makes its investments. Prior to joining GreenHills Ventures, Mr. Martinez was a private investor who participated in the successful acquisition of sixdegrees.com by YouthStream Media Network (OTCBB: YSTM) for $125 million and E@wonders, Inc. by BuyItNow for $150 million. Mr. Martinez is also a financial consultant and advisor to various multi-family offices and corporate investment firms. Mr. Martinez brings a wealth of over 30 years prior senior level, corporate financial management and mergers and acquisition experience as Managing Director for Mergers & Acquisition at Citibank, NA, and American Express Corporation, Coastal Oil, Inc. Inlumen, Inc., Dial Corporation, Seagram's Beverage Corporation, Olsten Financial Services, and PricewaterhouseCoopers, LLP (Coopers & Lybrand, LLP). In 1994, Mr. Martinez was appointed by the Governor of Georgia, Zell Miller, as a member of “Operation Legacy” to work with Fortune 1000 companies in preparation for the 1996 Atlanta Olympic Games. Mr. Martinez holds a M.B.A in Finance and a B.A. in Accounting from St. John's University, and post master’s degree in Executive Management Program in Mergers & Acquisitions and Corporate Finance from the Harvard Business School. Mr. Martinez was formerly a Certified Public Accountant. Mr. Martinez also serves on the advisory and investment committees of GH Fund I, GH Fund II, GH Wealth Management Holding, and GH Angel Capital Group, and serves as an independent outside advisor to the AngelPool Advisory Board(www.angelpool.org), AdmieMobile, True Share Vault, Cloudnician, N2-GS, Inc., Soshio, Inc., and major shareholder and single largest investor in Cyberis Group, the Spain-US Chamber of Commerce (www.spainusstartup.com/advisory). He also performs other board related activities in support of the firm’s investment activities. Mr. Martinez is fluent in Spanish, conversant in Italian and Hebrew and lives in New York City.

Senior Advisor, Advisory Committee and board member

Constantine Photopoulos

Constantine Photopoulos is President and Chief Executive Officer. Constantine brings extensive experience in Information Technology Security. For the past 20 years he has worked with large and mid sized firms to assist these companies with reviewing, developing, designing, and implementing their internal as well as external security and compliance initiatives. Authored and published several books on data breach and security. Mr. Photopoulos has extensive experience in IT Security and Compliance and is the author of the book "Managing Catastrophic Loss of Sensitive Data".

Senior Advisor, Advisory Committee and board member

Bradford Rand 

Mr. Bradford Rand, is a serial entrepreneur launched the Official Cyber Security Summit Series which is rated “Top 50 Infosec Conferences in the world and takes place in over 30 cities in the United States & Canada. European and Middle East.

The Cyber Security Summits are exclusively for security executives and business leadership. Each conference discusses the latest security threats & best practices in addition to showcasing cutting-edge solutions from 30 – 90 cyber solutions companies. Subject matter experts from The DOJ, The NSA, The FBI, US Secret Service, DHS/CISA and thought leaders from Google, Darktrace, IBM Security & more present at each conference.

Mr. Bradford’s team also produces TECHEXPO Top Secret; one of the nation’s leading hiring events for 20+ years for I/T, engineering, cyber professionals in the defense & intelligence industries. 200,000+ industry executives, most with an Active Security-Clearance have attended. Top companies such as Lockheed Martin, Northrop Grumman, Deloitte & Raytheon have exhibited. TECHEXPO has also produced customized recruiting events for IBM, AT&T, Accenture, Verizon & more.

In October of 2022, Mr. Bradford sold both of these divisions to the CyberRisk Alliance which he maintains a relationship. Mr. Bradford’s other company is RAND Luxury which currently produces the annual Hampton Concours, an Invitation-Only charity brunch & luxury car featuring Ferrari & Porsche that benefits the South Hampton Animal Shelter Foundation. Bradford has produced unveilings for top brands including Rolls-Royce, Aston Martin , Bentley, Sony, LG, Giorgio Armani along with exclusive film receptions during The Sundance, Tribeca & Toronto Film Festivals. Other productions of note include the Luxury Review and The Luxury Technology Show. Notable guests & hosts have included Jay Leno, Rachael Ray, Jerry Seinfeld, Alec Baldwin, Gerard Butler, Michael Strahan, Kevin Bacon & more. Mr. Rand’s other notable events include GoGreeenExpo.com; the nation’s largest trade shows for consumers & businesses showcasing eco-friendly products & services and FashionCareerExpo.com, job fairs for the fashion & retail industries. Mr. Bradford’s events have supported many charities including the American Red Cross, City Harvest & the Breast Cancer Research Foundation.

Senior Advisor, Advisory Committee and board member

Yoana Land

Yoana Land is a strategic, growth-oriented CFO with over 20 years of global leadership experience across Fortune 500 and private equity-backed companies. She is not your typical CFO: with a rare combination of financial acumen and a strong foundation in technology, she brings a forward-thinking, digitally fluent approach to business transformation, M&A, and value creation. Her expertise spans beauty, fashion, healthcare, pharmaceuticals, and consumer goods, with a proven track record of scaling operations and accelerating growth across North America, Europe, and Asia.

Currently, Yoana serves as a CEO Advisor to Norstella, a healthcare intelligence platform, where she partners with private equity sponsors to drive operational efficiency and long-term enterprise value. Previously, she was CFO of Jaya Apparel Group, where she led disciplined growth, cash optimization, and retail expansion. During her decade at L’Oréal, she held transformative roles including Chief Transformation Officer for North America, Division CFO, and North Asia Zone CFO. She led the execution of a $1.3B M&A deal, scaled a $2B division 8x in four years, and implemented enterprise-wide systems that modernized financial oversight and digital spend.

Yoana’s career began in IT at PepsiCo, where she spearheaded a $150M global tech transformation. Her tech fluency—rooted in a BS in Business Computer Technology—continues to distinguish her CFO leadership, allowing her to bridge finance, data, and digital strategy in ways few can.

She holds a Master of Finance from Harvard University (Summa Cum Laude), an MBA from Duke University (Magna Cum Laude), and dual US/EU citizenship. She is fluent in English and Romanian, with working knowledge of Spanish and French. Passionate about innovation and inclusion, Yoana also serves on multiple nonprofit and industry boards.