Arlington cyber warfare startup raises $100M, reaches unicorn status

An Arlington-based cyber warfare startup that emerged from stealth less than a year ago has already reached unicorn status.

Twenty Technologies announced last week that it has raised $100 million in a Series B funding round and reached a valuation of $1 billion. California-based venture capital firm Accel led the funding round, with participation from Friends & Family Capital, Point72 Ventures, and Caffeinated Capital. The latest round brings Twenty’s total funding to $138 million.

Founded in 2024, Twenty operated in stealth while working with the U.S. military and intelligence community to develop and deploy AI-powered cyber tools and systems designed to give warfighters the speed and scale needed to deter and defeat adversaries in cyberspace. While the systems use advanced AI and automation, the company says they keep human judgment at the center of key decisions.

According to the company, the latest funding round follows “unprecedented demand” from the federal government for offensive cyber capabilities built at commercial speed.

“America is under sustained cyber attack, and our adversaries have learned — correctly — that those attacks rarely carry consequences,” Twenty co-founder and CEO Joe Lin said in a statement. “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.”

Twenty emerged from stealth in November 2025 with a $38 million Series A funding round led by Caffeinated Capital. The company has not publicly disclosed its revenue, employee count or number of customers. Twenty did not immediately respond to requests for comment Monday.

Jonathan Turner, a partner at Accel, said the country needs to invest more in cyber capabilities to protect national security and that the U.S. has underinvested.

“Investing into the best cyber capabilities will create one of the strongest and most cost effective deterrents we can build,” Turner said. “Accel is proud to lead this round and help set the standard for investing in the capabilities the country needs most.”