Blackwall raises $100M at $2.2B valuation to expand bot-detection tools for hosting providers
The Estonia-based web traffic security firm has quadrupled its valuation since 2025 by focusing on AI agent identification and positioning itself as a white-label solution for hosting and cloud providers.
What happened
Blackwall, an Estonia-based company that builds web traffic security tools for hosting providers, raised $100 million in Series C funding at a $2.2 billion valuation on Tuesday. The round was led by AVP with participation from existing investors Dawn Capital, MMC Ventures, and Tera Ventures. The valuation represents a fourfold increase from the company's previous fundraise in 2025. Blackwall's platform helps websites manage bot traffic and AI agents through services including DDoS protection, certificate management, threat intelligence, and traffic analysis using digital fingerprinting and AI-powered behavioral analysis to differentiate legitimate traffic from malicious requests.
Context
Web infrastructure companies face growing pressure as bot traffic and AI agent activity intensify, creating both a security challenge and a commercial opportunity. Blackwall differentiates itself by using a channel model—providing customizable security tools to hosting providers, cloud services, and managed service providers who can rebrand and resell them to their own customers while retaining customer relationships and revenue sharing. This positions Blackwall against larger competitors like Cloudflare and Akamai that sell directly to websites. The company sees significant future opportunity as AI agents increasingly conduct transactions on behalf of users, creating demand for systems to authorize and manage which agents access websites and on what terms. The funding will support expansion across North America, Europe, Asia-Pacific, and the Middle East, and development of additional security tooling for the hosting and cloud provider ecosystem.