Overwatch raises $15 million to fight AI-powered fraud with AI agents

Overwatch, a New York start-up that uses AI agents to spot digital threats and fraud for large companies, has raised $15 million in a Series A funding round led by Mouro Capital, the company announced on Monday, October 26, 2026. Visa Ventures, Capital One Ventures, PruVen Capital, New Era Capital Partners and Y Combinator also took part. The company was founded in 2022 by Arjun Bisen, its chief executive, and Zara Perumal.

The round is a signal of where security money is going as criminals adopt AI tools. Bisen's argument, as reported, is that AI has already changed cybercrime today, not only in some future world of rogue AI agents. He said attacks have become very cheap to launch, which lets a single attacker run many campaigns in a few days. That shift puts pressure on banks, payment firms and online platforms, which must watch far more signals than a human team can read.

Two terms help explain the product. Open-source intelligence, often shortened to OSINT, means information gathered from public places such as websites, forums and social media. Threat intelligence is the work of collecting and analysing signs that an attack is being planned or is under way, such as stolen card data being offered for sale or a fake website copying a bank's login page. Overwatch says its AI agents, which are software programs that can carry out tasks on their own, gather these signals from the dark web, social media and news outlets and turn them into alerts.

The company makes strong claims about results. It says customers resolve six times as many critical threats, spot new threats three days earlier and save more than 20 hours of analyst time a week. These are the company's own figures and have not been checked independently.

The investor list is notable. When a card network and a large bank invest through their venture arms and also use the product, it suggests the tool is already in daily use at large payment companies. It also ties the start-up closely to the payments industry, which is one of the main targets of online fraud.

For Indian readers, the story is relevant because Indian banks, fintech firms and payment apps face the same kind of online fraud. Indian security start-ups and security teams at global capability centres in India work on the same problem, and rounds like this show the kind of product investors are backing.

Short-term: Overwatch has fresh money to grow its platform and sales. Its payment-industry customers gain a supplier that is now better funded, and rivals in threat intelligence face a competitor backed by two large users.

Long-term: If AI keeps lowering the cost of attacks, demand for automated monitoring is likely to grow, and more security spending may move from human analysts reading alerts to AI agents that sort them first. Whether the company's results hold up at scale will decide how far it grows.

Who is affected: Security teams at banks, card networks and payment apps; customers of those firms, who are the end targets of fraud; cyber-security start-ups competing for the same budgets; and security professionals whose daily work is shifting toward overseeing AI tools.

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