ARLINGTON, Va. — In a historic milestone for the defense technology sector, Twenty, America’s first venture-backed cyber warfare startup, has announced a $100 million Series B funding round at a $1 billion valuation.
The round places Twenty into unicorn status, cementing its position as the definitive offensive cyber company scaling state-of-the-art capabilities for the United States and its allied nations.
The Series B was led by premier venture capital firm Accel, with significant participation from Friends & Family Capital, Point72 Ventures, and Caffeinated Capital. This latest injection of capital brings Twenty’s total funding to date to $138 million.
The fresh capital will be used to aggressively expand its engineering and research teams, accelerating the deployment of AI-driven cyber systems that safeguard democratic institutions worldwide.
Industrializing Cyber Operations for National Security
Founded in 2024, Twenty is tackling one of the most critical gaps in modern national defense: the industrialization of offensive cyber warfare.
The company develops AI-enabled, end-to-end systems engineered specifically for the U.S. military and the Intelligence Community.
By leveraging automation and machine learning, Twenty equips warfighters with the unprecedented speed and scale required to deter and defeat sophisticated adversaries in cyberspace.
However, using a “human-in-the-loop” approach, its systems prioritize rigorous evaluation, controlled deployment, and strict mission alignment. This ensures human judgment remains central to every offensive operation.
Meeting the Demand for Commercial-Speed Defense Tech
The massive funding round arrives amid a shifting geopolitical landscape and a renewed strategic focus from Washington.
The White House has increasingly called for a proactive approach to national cybersecurity, urging the deployment of a comprehensive suite of offensive cyber operations to disrupt adversary networks and impose severe costs on state-sponsored threat actors.
“America is under sustained cyber attack, and our adversaries have learned—correctly—that those attacks rarely carry consequences,” said Joe Lin, Co-founder and CEO of Twenty. “Twenty exists to change that. We are building the industrial base for American cyber power: the AI-enabled capabilities our warfighters need to disrupt threats at their origin. This round is extraordinary validation from some of the world’s foremost investors, and we are pouring this funding directly into research and engineering.”
Venture Capital Rallies Behind Defense Innovation
Traditionally, offensive military capabilities have been developed solely within closed government labs or by legacy defense primes. Twenty’s rapid growth underscores a massive shift toward venture-backed commercial technology entering the defense space.
“Investing into the best cyber capabilities will create one of the strongest and most cost-effective deterrents we can build. Twenty is the clear leader in this market: the team is unmatched, the mission is urgent and timely, and the company has reached operational relevance at a pace rarely seen in defense technology,” said Jonathan Turner, Partner at Accel.
Colin Anderson, Founding Partner at Friends & Family Capital and former CFO at Palantir, highlighted the startup’s unprecedented agility.
“The company has moved with commercial urgency in one of the government’s most sensitive and consequential mission areas, which is extraordinarily difficult to do…we are proud to partner with them once again as Twenty builds capabilities that are critical to America’s security.”
Strong Foundation and Strategic Backing
Prior rounds were led by Caffeinated Capital and Tim Junio, Co-founder and CEO of Expanse (which was acquired by Palo Alto Networks for $1.25 billion in 2020).
The company also boasts early backing from prominent venture firms including General Catalyst and In-Q-Tel (the strategic investor for the U.S. intelligence community).
Such an elite roster of early investors not only boosted Twenty into a $1 billion valuation, it positioned the company to be a cybersecurity leader for the future.
