Investors & Partners at AllegisCyber

David Dewalt

Managing Director, AllegisCyber

David Dewalt is a Managing Director at AllegisCyber, a venture capital firm focused on identifying and investing in the most promising cybersecurity companies. With deep expertise in cybersecurity, enterprise software, artificial intelligence, and SaaS business models, Dewalt brings a strategic perspective to portfolio companies at critical growth stages. At AllegisCyber, he evaluates opportunities across the cybersecurity landscape, leveraging his understanding of market dynamics and technology trends to support founders building transformative solutions. His investment thesis centers on companies that address emerging security challenges while demonstrating sustainable, scalable business models. Dewalt is committed to partnering with entrepreneurial teams to drive innovation in cybersecurity and enterprise technology, helping portfolio companies navigate growth, market expansion, and the evolving threat landscape.

Robert Ackerman Jr.

Managing Director and Founder, AllegisCyber

Robert Ackerman Jr. is known as the "father of the first iPhone" through InfoGear and founded what became the first venture firm to focus exclusively on cybersecurity in 2015, giving him unusually long pattern recognition in cyber investing. He co-founded DataTribe, a startup studio that commercializes cyber innovations from the U.S. Intelligence Community and national labs, providing him a unique pipeline into government-grade technology distinct from traditional venture deal flow.

Spencer Tall

Managing Director, AllegisCyber

Spencer Tall is a Managing Director at AllegisCyber, a venture capital firm specializing in cybersecurity investments. With a focus on enterprise security, artificial intelligence, and SaaS solutions, Tall works with innovative companies addressing critical cybersecurity challenges in the digital landscape. At AllegisCyber, he leverages his expertise to identify and support emerging technologies and teams that are transforming how organizations protect their critical assets and data. Tall's investment thesis centers on the intersection of cybersecurity and advanced technologies, positioning him at the forefront of investments in next-generation enterprise security platforms. Through his work as Managing Director, he is actively involved in deal sourcing, due diligence, and portfolio company support, helping AllegisCyber portfolio companies achieve significant growth and market impact.