Blackwall raises $100M at $2.2B valuation to help websites manage bot and AI traffic
The Estonia-based startup’s valuation quadrupled from 2025, reaching $2.2 billion in its October 20, 2026 Series C led by AVP. Its channel model lets hosting providers resell branded security tools for bot and AI-agent traffic.
Estonia-based Blackwall announced on October 20, 2026 that it has raised $100 million in a Series C funding round at a $2.2 billion valuation — four times its valuation from its previous fundraise in 2025. The round was led by AVP, with participation from existing investors Dawn Capital, MMC Ventures, and Tera Ventures.
Blackwall builds web traffic security tools for hosting providers, helping websites manage the growing volume of bot traffic, including AI agents. Rather than selling directly to websites, the company works through a channel model, partnering with web hosting, managed service, and cloud providers. Those partners receive a customizable bundle of security tools they can offer to their own clients under their own branding, setting their own prices and sharing revenue with Blackwall.
The company’s services include threat intelligence, certificate management, DDoS protection, and traffic routing. To distinguish legitimate visitors and AI agents from malicious bots, Blackwall uses techniques such as digital fingerprinting to identify the software behind a request, as well as its own AI models deployed at customer endpoints to analyze the intent and behavior of incoming traffic.
Co-founder and CEO Nikita Rozenberg told TechCrunch that Blackwall’s channel approach gives hosting providers direct control over their customer relationships — a contrast to handing that relationship to a third-party security provider. Executive chairman Roi Carthy confirmed the funding quadrupled the company’s valuation since its last round.
Rozenberg sees a growing opportunity as AI agents begin transacting with websites on behalf of users, which could require systems to manage agent access, authorization, and payments. Competitor Cloudflare already offers AI crawl controls with an option to charge crawlers for access, but Rozenberg argues Blackwall’s model keeps that control with the hosting provider.
Blackwall plans to use the new funding to expand operations across North America, Europe, Asia-Pacific, and the Middle East, and to develop additional security tooling for hosting, cloud, and managed service providers.