Overwatch Data, a Brooklyn-based threat intelligence startup, has raised a $15 million Series A led by Mouro Capital, Fortune reported Monday. Visa Ventures and Capital One Ventures also took part, a notable pairing given that both companies' parent businesses are among the startup's customers.
Those customers, which Fortune said include Stripe and DoorDash, are contending with attackers who use artificial intelligence to scale fraud and cybercrime. Overwatch is betting that defenders can use the same technology to keep pace.
Who put in the money
Fortune first reported the round on Oct. 26 and named Mouro Capital as lead. A day later, Fintech.global added that Visa Ventures and Capital One Ventures joined as strategic investors, meaning backers with a commercial interest in the company's market as well as a financial one. PruVen Capital and New Era Capital Partners reportedly contributed follow-on money. Y Combinator, which funded the company in its S22 batch, was listed as a prior backer.
A Form D that Overwatch filed with the Securities and Exchange Commission on Oct. 26 puts some numbers on the raise. It shows $14,959,986 sold against a $15,199,984 offering, from eight investors, with the first sale dated July 15, 2026. The filing does not name those investors. No valuation was disclosed in the available sources, and as of Oct. 27 no press release had appeared on its website.
One wrinkle deserves mention. An earlier Form D, filed Feb. 3, 2025, reported $7,379,998 sold to 16 investors, and third-party trackers label that earlier raise a Series A as well. The filing itself carries no stage label, so the naming may simply reflect how different data providers categorize rounds.
What the company sells
Overwatch describes itself as an AI-native threat intelligence and risk operations platform spanning cyber, fraud, brand and merchant risk. According to its website, AI agents and human analysts gather signals from open, social and dark web sources, connect patterns among them and deliver finished intelligence to security teams.
The company says its customers see six times as many critical threats, detect them three days sooner and save more than 20 hours of analyst time each week. Those are Overwatch's own figures, and no independent validation was found as of Oct. 27.
Fortune named Visa, Capital One, Cash App, SoFi, Stripe and DoorDash as customers.
The people behind it
Chief executive Arjun Bisen is a former Australian diplomat who later worked at Google, on search and product policy, and at Stripe, in risk, according to the company's Y Combinator profile. Chief technology officer Zara Perumal previously worked on Google's Threat Analysis Group and on Google Assistant.
Perumal testified before a U.S. House Judiciary subcommittee on July 16, 2025. In her prepared remarks she said that "AI lowers the barrier to learning, executing, and scaling cybercrime and fraud."
Bisen struck a similar note in his comments to Fortune. "As much as we've all seen the scam messages, it's actually way worse than even that suggests," he said.
Jeff Needham joined as chief revenue officer in 2025, according to the company's leadership page. His résumé includes stints at Cisco, Symantec, ThreatConnect, Flashpoint and Intel 471. LinkedIn lists Overwatch at 11 to 50 employees, though that snapshot is a couple of months old and headcount may have moved since.
A crowded field
Overwatch is entering a market with entrenched names. CSO Online's buyer guide lists Recorded Future, Mandiant/Google Threat Intelligence, Flashpoint and Intel 471 among providers of finished intelligence, while platforms like Anomali and Cyware turn up in other industry buyer guides.
The backdrop is not reassuring. The FBI's Internet Crime Complaint Center reported nearly $21 billion in cyber-enabled crime losses for 2025, a 26% increase from 2024, across 1,008,597 complaints.
Where the money goes
Fintech.global reported that Overwatch intends to push its AI agents deeper into the risk lifecycle, including monitoring, underground investigations, merchant onboarding and due diligence. The company also plans to hire across engineering, investigations and sales.
Whether its results hold up outside its own marketing, and against rivals with far longer track records, will likely decide how far this round carries it.
