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Blackwall quadruples valuation to $2.2B as websites wrangle an increasingly crowded internet
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Estonia-based Blackwall raised $100 million in a Series C at a $2.2 billion valuation, quadrupling its valuation since its previous fundraise in 2025. The company builds web traffic security tools for hosting providers. AVP led the round, with existing investors Dawn Capital, MMC Ventures and Tera Ventures participating.
Web infrastructure firms such as Cloudflare, Akamai and Imperva face DDoS attacks, scraping, botnets and swarms of AI agents. That creates a valuable but difficult market. Blackwall avoids direct competition by using a channel approach.
It works with web hosting, managed service and cloud providers, handing over customizable tools they can brand and sell. Providers retain the customer relationship, set prices and share revenue with Blackwall. A free tier shows traffic and threats; protection and tools are paid.
The platform offers threat intelligence, certificate management, DDoS protection and traffic routing. It uses digital fingerprinting to identify software sending requests, such as Microsoft Office or Codex. Its AI models at customer endpoints analyze intent and behavior to separate legitimate visitors and agents from malicious bots.
CEO Nikita Rozenberg sees a major opportunity as AI agents interact and transact with websites on behalf of users. That will require systems to manage which agents get access, on what terms, and how they are authorized to pay. Cloudflare’s AI Crawl Control already lets sites allow, block or charge individual AI crawlers. Rozenberg argues Blackwall’s advantage is letting hosting providers offer traffic management themselves rather than ceding the customer relationship.
Blackwall plans to use the funding to expand across North America, Europe, Asia-Pacific and the Middle East. It will develop more security tooling for hosting, cloud and managed service providers. The raise signals that managing an increasingly crowded internet is becoming a major business.
