Company - Calyptix Security Company - Calyptix Security
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About Calyptix Security

Calyptix Security helps small and medium offices secure their networks so they can raise profits, protect investments, and control technology. Our customers do not waste time with security products designed for large enterprises. Instead, we make it easy for SMBs to protect and manage networks of up to 350 users.

Calyptix understands small business. We understand network complexity and we understand the meaning of “partnership.” When we protect your network or your clients’ networks, you get more than the best tools for security and management. You get flexible partnership terms that match your business model and industry-leading tech support from US-based engineers. Contact us today to discover a security solution that is designed for you.



Lawrence Teo

Founder and VP of Development

Lawrence Teo is the Founder and Vice President of Development at Calyptix Security. As lead architect of AccessEnforcer, the company’s flagship security solution, Lawrence oversees development, researches and designs new features, and monitors the world of security to ensure that Calyptix’s customers stay protected from the latest threats.

Lawrence began his studies in applied computer science at Monash University in the honors program before continuing his studies at University of North Carolina, Charlotte. There he earned a doctorate in internet security, and through his dissertation he devised the technology that would become AccessEnforcer.

Throughout his career, Lawrence has published multiple articles in both scientific and commercial settings, served on program committees and panels, and given talks at technology conferences. He is also a developer with the OpenBSD project, an operating system that is considered among the most secure in the world and is a foundational part of AccessEnforcer.

Ben Yarbrough - Calyptix CEO

Ben Yarbrough


Ben Yarbrough is the Chief Executive Officer at Calyptix Security. He oversees the day to day operations of the company and helps coordinate the sales, support, and development teams to help best serve customers. Ben also works to maintain the company’s finances and helps develop and foster the vision of the company.

Prior to joining Calyptix, Ben received his bachelor’s degree in economics from Davidson College. From there, he spent two years working as a legislative aid on the U.S. Senate Committee on Agriculture, Nutrition, and Forestry. Ben continued his education with a Juris Doctor from the University of Virginia School of Law. He spent the next 13 years working in corporate law, namely mergers and acquisitions and private equity, both at Kennedy, Covington Lodbell & Hickman and Foodman, Hunter & Karres PLLC.

Ben joined Calyptix as CEO in 2007, having worked for more than two years with Founder Lawrence Teo as a strategic business advisor, helping to cultivate Lawrence’s vision of a network security company and assist in commercialization.

Yuliang Zheng

Yuliang Zheng

Former CTO

Dr. Yuliang Zheng is Co-Founder and former Chief Technical Officer at Calyptix Security. In the early years of the company, Yuliang was an important technical advisor, helping to shape the foundation of what would become AccessEnforcer UTM Firewall, the company’s flagship product.

Yuliang received his bachelor’s degree in computer science in 1982 from Nanjing Institute of Technology in Nanjing, China. He received master’s and doctorate degrees in computer engineering from Yokohama National University in Yokohama, Japan. From 1991 to 2001, he served as a faculty member in three Australian universities: Australian Defence Force Academy, University of Wollongong, and Monash University. He later joined the University of North Carolina at Charlotte as a professor and founded the Information Security and Assurance Center.

Yuliang joined the University of Alabama at Birmingham in 2015 and serves as Professor and Chair of the Department of Computer Science. There he pioneered academic programs in Big Data Analytics, Cyber Security, Bioinformatics and related fields. He has authored and co-authored hundreds of scholarly research papers in academic journals. He is also the creator of signcryption, a cryptographic primitive accepted as an ISO international standard for data security.