Blackwall raises $100 million
Blackwall, an Estonia-based startup that builds web traffic security tools for hosting providers, said on Tuesday that it has raised $100 million at a $2.2 billion valuation. It builds products that help websites grapple with the skyrocketing volume of bot traffic, especially AI agents.
The Series C was led by AVP, with participation from existing investors Dawn Capital, MMC Ventures and Tera Ventures. Blackwall’s executive chairman, Roi Carthy, told TechCrunch that this funding round increased the company’s valuation by 4 times since its previous fundraise in 2025.
Blackwall works with web hosting, managed service and cloud providers through a “channel” approach, understanding their needs and then handing over a bundle of tools that they can customize. Those providers can then offer Blackwall’s security tools to their own clients under their own branding and retain control of that relationship.
Co-founder and CEO Nikita Rozenberg said hosting companies can mix and match security components to build their own solution according to what they want to provide to their end customers, set the prices, and share a cut of the revenue with Blackwall. The company initially gives its customers a free tier showing the traffic and threats hitting their network, but charges for any protection or tools to address the threats.
Blackwall plans to use the funding to expand its operations across North America, Europe, Asia-Pacific and the Middle East, and develop more security tooling for hosting, cloud and managed service providers.
