Top Companies in the AI Fraud Defense Market in 2026

§ 01 Executive Snapshot

• What: A report by CB Insights highlights the emergence of companies in the AI fraud defense market and their funding trends leading into 2026.
• Who: Notable companies include Doppel, Kasada, Oasis Security, and Arcade.dev, among others.
• Why it matters: The increasing threats of AI-driven fraud necessitate innovative solutions, driving significant investment and the creation of a new infrastructure layer for fraud prevention.

§ 02 Key Developments

• Investment in the fraud detection and prevention sector saw a 3.5x increase in equity funding from 2024 to 2025.
• Doppel raised US$70 million in a Series C round at a US$600 million valuation in November 2025.
• Kasada secured US$20 million in February 2026 to expand its advanced bot defense offerings globally.
• Oasis Security raised US$120 million in Series B funding in March 2026, achieving a 5x YoY growth in annual recurring revenue (ARR).
• Arcade.dev raised US$60 million in June 2026, with a reported 25x surge in tool call volume in six months.

§ 03 Strategic Context

• The AI fraud defense market is evolving rapidly as traditional systems are increasingly supplemented with AI-powered solutions, reflecting a shift in response to AI-initiated fraud.
• The emergence of agentic trust infrastructure signifies a new approach to governance and oversight in transactions initiated by AI agents, which conventional fraud controls can't sufficiently address.

§ 04 Strategic Implications

• The immediate market consequence is a robust increase in investment in fraud detection technologies, which could reshape security protocols across industries.
• Long-term operational implications include the establishment of new infrastructure for regulating AI agent activities, enhancing security and compliance in automated financial transactions.

§ 05 Risks & Constraints

• Potential regulatory challenges may arise as AI technologies advance, necessitating compliance with evolving standards and frameworks.
• Competition among emerging AI fraud defense firms could intensify, potentially leading to market saturation and pressures on pricing and service differentiation.

§ 06 Watchlist / Forward Signals

• Key upcoming milestones include the anticipated funding rounds and product launches from leading companies in the sector, particularly those like Oasis Security and Arcade.dev.
• The success of AI fraud defense initiatives will be indicated by metrics such as YoY growth in ARR, customer adoption rates, and overall market funding levels.