Doppel has raised $70 million in new Series C funding as demand surges for AI-powered protection against increasingly sophisticated social engineering attacks. The round brings Doppel’s total funding to $124 million and lifts its valuation to more than $600 million, reflecting a threefold increase in only six months.
Bessemer Venture Partners led the latest investment, joined by an expanded roster of new backers that includes CrowdStrike chief executive George Kurtz, NTT DOCOMO Ventures, Aurum Partners, and a group of athlete investors aligned with the a16z Cultural Leadership Fund, including WNBA players Nneka Ogwumike, Breanna Stewart, and Kelsey Plum. Returning investors comprise Andreessen Horowitz, South Park Commons, Script Capital, 9Yards Capital, Sozo Ventures, and Strategic Cyber Ventures.
The rapid progression of generative AI has sparked both unprecedented innovation and heightened vulnerability for enterprises. Cybercriminals are increasingly wielding AI to execute hyper-personalized attacks across digital channels, creating an urgent need for defenses that adapt at a comparable speed. Doppel has emerged as a key provider in this category, offering a multi-channel social engineering defense platform that uses agentic AI and a real-time threat graph to identify threats, automate takedowns, and strengthen employee readiness through deepfake-driven simulations and immersive training.
The new capital will accelerate product development across Doppel’s Digital Risk Protection suite and expand its Human Risk Management tools, including its recently launched Simulation offering. Introduced in August, the Simulation product has already generated meaningful traction and contributed a significant portion of new bookings in the third quarter, reflecting strong early demand for the expanded platform.
Doppel continues to maintain strong momentum, recording three times annual recurring revenue growth year over year and a more than fivefold increase in Fortune 500 customers. The company now works with dozens of Fortune 500 enterprises and more than 200 organizations across industries such as financial services, healthcare, energy, industrials, manufacturing, media, and technology. Its customer base includes notable brands like Coinbase, Ramp, Commerce, and Orrick. To support this expansion, Doppel has more than doubled its workforce over the past year and is hiring across engineering, product, sales, marketing, and international roles.
Customers cite significant reductions in impersonation risk, exposed executive data, and brand vulnerability through Doppel’s unified threat detection, takedown automation, and training-driven human risk mitigation. The company’s newest collaboration with OpenAI has also resulted in a significant step forward for autonomous cybersecurity, with Doppel fine-tuning OpenAI’s models on thousands of proprietary security decisions to create an AI agent capable of detecting and neutralizing complex threats in real time.
KEY QUOTES
“We’re thrilled to double down on our partnership with Doppel, as their world-class team is truly unparalleled. In my 20 years of working with startups, Doppel stands out with its incredible speed, massive ambition, and laser focus on execution, which is a clear recipe for success. We believe these qualities will solidify Doppel as the unquestioned leader in social engineering defense for years to come.”
Elliott Robinson, Partner, Bessemer Venture Partners
“I’m excited about what Doppel is delivering to combat social engineering attacks. Cybercriminals are using AI, conducting increasingly sophisticated attacks to manipulate and deceive users. Doppel’s traction with Fortune 500 enterprises illustrates market need for social engineering defense (SED) and impressive momentum.”
George Kurtz, CEO and Founder, CrowdStrike
“As a global, publicly traded company, protecting our business and customers is vital. Doppel is a core layer of our security program, helping us to reduce risk by taking down impersonations across channels, and ultimately safeguarding our brand and reputation. We’re excited by Doppel’s pace of innovation and the impact it will continue to have on our customers and brand.”
Cayden Larkin, Security Analyst, Commerce (Parent Company of BigCommerce and Feedonomics)
“As a global brand with highly visible executives, protecting our leadership team is paramount. Doppel has been a game-changer for our corporate security, driving a 93 percent reduction in exposed executive PII and proving vital to minimizing our risk profile. We are proud to call Doppel a great partner in ensuring our leadership’s safety, and look forward to the continued innovation and impact.”
CISO, Fortune 500 Agriscience Company
“We’re proud to have the continued support of returning investors and to welcome new partners to our roster. Their support validates the strength of our vision and the work our team has accomplished. This signals confidence in the path we’re on and reinforces our commitment to driving rapid growth. With this backing, we are positioned to continue scaling aggressively and creating meaningful impact in the market.”
Kevin Tian, CEO and Co-Founder, Doppel
