Resistant AI Raises $25 Million Series B to Strengthen Global Fight Against AI-Driven Financial Crime

Resistant AI, a Prague-based artificial intelligence company focused on fraud and financial crime prevention, has raised US $25 million in a Series B financing round, strengthening its position in the rapidly growing RegTech and FinCrime technology sector. The round was led by DTCP Growth, with participation from existing investors including Experian, GV (Google Ventures), and Notion Capital.

Founded in 2019 by Martin Rehak and a team of cybersecurity and AI specialists—whose previous company, Cognitive Security, was acquired by Cisco Systems—Resistant AI has built a reputation for applying machine learning to safeguard financial systems from increasingly sophisticated digital threats. Its technology integrates into existing compliance and fraud prevention workflows to detect document tampering, synthetic identities, mule accounts, and AI-generated scams before they can cause financial or reputational damage.

The newly raised capital will be used to accelerate Resistant AI’s global expansion, scale product development, and strengthen its intelligence capabilities. The company plans to deepen its models in document fraud detection and transaction monitoring, ensuring that financial institutions can combat an evolving threat landscape where fraudsters are increasingly leveraging generative AI.

This latest round follows the company’s US $16.6 million Series A announced in 2021, which was led by GV with support from Index Ventures, Credo Ventures, and Seedcamp. That round was later extended to roughly US $27.6 million after additional investment from Notion Capital in 2023. The company’s total funding to date now exceeds US $50 million.

Since its Series A, Resistant AI has seen rapid commercial growth. Its annual recurring revenue has increased by nearly tenfold, its customer base has quadrupled, and it has processed more than 150 million documents across its fraud and compliance platform. The company employs over 100 people across its offices in Prague, London, and New York.

Resistant AI’s solutions serve banks, fintechs, payment processors, and enterprise clients who face a growing challenge from AI-assisted fraud. Its systems function as an additional layer of defence, rather than a replacement for existing infrastructure, complementing fraud detection, transaction monitoring, and identity verification technologies already in place. The firm’s core innovation lies in applying AI to identify the subtle patterns of manipulation that traditional rule-based systems often miss—especially when attackers use synthetic data or document forgery.

According to CEO Martin Rehak, the latest investment will allow Resistant AI to “protect the global financial system from increasingly sophisticated criminal networks.” The company also plans to expand its partnerships and integrations with major financial institutions and regulatory technology providers, enabling its detection models to operate seamlessly within global compliance frameworks.

The participation of DTCP Growth as the lead investor brings new momentum to Resistant AI’s scale-up ambitions. DTCP focuses on high-growth technology companies across Europe and North America, with a portfolio that includes firms in cybersecurity, cloud infrastructure, and enterprise software. Existing backers such as GV and Notion Capital add deep expertise in scaling SaaS and data-driven technology businesses, while Experian’s continued participation highlights growing convergence between credit analytics and real-time fraud prevention.

The funding arrives at a crucial moment for the financial services industry. As institutions deploy AI for customer onboarding, credit scoring, and transaction analysis, they face an arms race with malicious actors using the same technologies to automate fraud and exploit system vulnerabilities. Resistant AI’s approach—combining document forensics, transaction analysis, and behavioural modelling—aims to give compliance teams an AI-powered advantage against this new class of threats.

With its Series B secured, Resistant AI is now positioned to scale globally and cement its reputation as a leader in AI-powered financial crime prevention. Backed by investors with strong domain experience and a growing client base across the banking and fintech ecosystem, the company’s mission remains clear: to make the world’s financial systems resilient against the next generation of intelligent fraud.