Doppel Social Engineering Defense Platform

Doppel is a San Francisco-based company, led by CEO and co-founder Kevin Tian, that describes itself as an agentic platform for social engineering defense. It protects organizations and their customers from phishing sites, fake social media accounts, impersonation ads, scam calls and deepfakes that abuse their brand or executives.

The platform combines digital risk protection, human risk management and email security. Brand protection analyzes more than 1 billion indicators a day and automates takedowns across registrars, social platforms, ad networks and telcos, with analysts handling escalations. Executive protection covers impersonation, doxxing and deepfakes. Simulation and deepfake-enabled security awareness training test employees, while email security and phishing triage catch messages that bypass filters. Customers include Coinbase, BlackRock, T-Mobile, OpenAI, United Airlines, Shopify and REA Group.

• Brand protection: Detects and takes down impersonation sites, social accounts, ads and scam numbers.
• Executive protection: Defends leaders against impersonation, doxxing and deepfake attacks.
• Social engineering simulation: Runs realistic multi-channel attack scenarios against employees.
• Deepfake-enabled training: Delivers tailored security awareness training using AI personas.
• Email security and triage: Catches and triages phishing that bypasses existing filters.
• Threat Graph: Links indicators across channels to map entire attack campaigns.

A Vietnamese bank can monitor and take down fake fanpages, phishing domains and ads that impersonate it. A crypto exchange or e-wallet can protect executives from deepfake impersonation used in investment scams. A retailer can train customer service staff with simulated social engineering calls.

Doppel reports a median takedown time under 10 hours for fake domains, social media accounts and paid ads, limiting how long scams can reach customers. ARK Invest reported a 50% year-over-year drop in impersonation volume after deployment. One platform links external brand abuse with employee training and email protection, so the same attack campaign is seen end to end. Deepfake simulations show staff how convincing AI callers can be.

Scams that impersonate banks, exchanges and retailers on social media, ads and phone lines are among the fastest-growing fraud types in Asia, and AI makes fake sites and voices cheap to create. Regulators increasingly expect brands to act on impersonation quickly. Vietnamese banks, fintechs and e-commerce platforms, whose customers are frequent scam targets, need fast detection and takedown alongside staff training.

Doppel is based in San Francisco. In November 2025 it raised a 70 million USD Series C led by Bessemer Venture Partners, with NTT DOCOMO Ventures, CrowdStrike CEO George Kurtz and returning investor Andreessen Horowitz, bringing total funding to 124 million USD at a valuation above 600 million USD. It reports more than 200 customers, has announced ISO 42001 certification, and is the official social engineering defense partner of the San Francisco 49ers.