Doppel's AI Battle: Secures $70M to Stay Ahead of Cyber Risks

Doppel, a company specializing in AI-powered social engineering defense (SED), has secured $70 million in Series C funding with Bessemer Venture Partners leading the round. This brings the company’s total funding to $124 million and pushes its valuation past $600 million

. The funding round, revealed on November 19, 2025, welcomed new backers including CEO George Kurtz, NTT DOCOMO Ventures, and WNBA stars Nneka Ogwumike, Breanna Stewart, and Kelsey Plum, joining returning investors such as Andreessen Horowitz and Sozo Ventures . This investment follows a Series B just half a year earlier, during which Doppel’s valuation tripled .

This latest funding reflects the rising need for solutions to counter AI-driven social engineering attacks, which are increasingly used by cybercriminals to launch highly targeted campaigns across social media and the dark web. Doppel’s platform leverages agentic AI and a dynamic threat graph to identify, disrupt, and simulate attacks, while its Human Risk Management (HRM) suite delivers AI-powered security training and phishing simulations

. The company reports its annual recurring revenue (ARR) has tripled year-over-year, and its Fortune 500 client base has grown fivefold, now serving over 200 organizations in sectors like finance, healthcare, and technology .

Investors are drawn to Doppel’s capacity to fill a crucial gap in enterprise cybersecurity. “Doppel distinguishes itself with remarkable speed, bold ambition, and a relentless focus on results,” said Bessemer Partner Elliott Robinson, highlighting the firm’s strong belief in Doppel’s future

. CrowdStrike’s George Kurtz stressed the growing sophistication of AI-enabled threats, noting that defenses must evolve just as rapidly .

Doppel’s technology has already won over major clients. Commerce, the parent company of BigCommerce, credits Doppel with minimizing impersonation threats and protecting its brand

. A leading Fortune 500 agriscience company reported a 93% drop in exposed executive personal data after implementing Doppel’s solutions . Doppel’s partnership with OpenAI on reinforcement fine-tuning (RFT) to automate threat response further strengthens its technological leadership .

The Series C funds will be used to boost R&D for Doppel’s Digital Risk Protection suite and broaden HRM offerings, including new simulation tools that replicate real-time deepfake attacks. The company also intends to grow its global workforce and expand internationally, having already doubled in size over the past year

. CEO Kevin Tian stated that this investment affirms Doppel’s commitment to “shielding the world from the surge of social engineering threats,” which he calls “one of the defining challenges of the AI era” .

As generative AI opens up new avenues for cyberattacks, Doppel’s rapid ascent reflects a broader industry movement toward AI-first security solutions. With cybercriminals exploiting AI to deceive users, organizations are turning to platforms that can outpace these threats through innovation. For Doppel, this Series C is not a finish line but a launchpad—a $70 million step forward in the ongoing battle to strengthen organizational resilience against evolving digital threats.