Doppel, a San Francisco, CA-based AI-powered social engineering defense platform, has raised $35 million in Series B funding at a $205 million valuation. 

Investors 

The round was led by Bessemer Venture Partners, with participation from new investors 9Yards Capital and Sozo Ventures, as well as repeat investors a16z, South Park Commons, Strategic Cyber Ventures, Script Capital, and Sabrina Hahn, bringing Doppel's total funding to $54.4 million. 

Bessemer Venture Partners is a venture capital firm that supports entrepreneurs across the enterprise, consumer, and healthcare sectors. With over 145 IPOs and more than 300 portfolio companies, Bessemer backs founders and CEOs from their early days through every growth stage. The firm manages over $20 billion in assets and operates globally, with hubs in Silicon Valley, New York, London, Bangalore, Tel Aviv, and Beijing. 

Doppel Use of Funds 

The company will use the funds to expand its core products and meet the growing demand for social engineering defense across industries. 

About Doppel 

Founded in 2022 by Kevin Tian and Rahul Madduluri, Doppel is an AI-powered platform dedicated to defending against social engineering threats targeting corporations, their executives, and employees. It uses proprietary AI technology to counteract personalized attacks targeting organizations across various surfaces, including domains, social media, email, and apps. Doppel offers services, such as brand protection, executive protection, and digital risk management across social media, domains, and the dark web. Headquartered in San Francisco, California, Doppel's mission is to protect humanity from adaptive, AI-assisted social engineering. 

Funding Details 

Company: Doppel, Inc.

Raised: $35.0M 

Round: Series B 

Funding Date: May 2025 

Lead Investor: Bessemer Venture Partners 

Additional Investors: 9Yards Capital, Sozo Ventures, a16z, South Park Commons, Strategic Cyber Ventures, Script Capital, Sabrina Hahn 

Company Website: https://www.doppel.com/  

Software Category: Cybersecurity / Social Engineering Defense 

Source: https://www.doppel.com/blog/doppel-raises-35-million-series-b