Blackwall raises $100M: AI agent controls ship via your host

Blackwall, an Estonian web traffic security company, raised a $100 million Series C at a $2.2 billion valuation, TechCrunch reported on October 20. The pitch is AI agent and bot traffic control. The model is the part that matters for small businesses: Blackwall does not sell to you. It sells to your web host, which puts its own brand on the product and sets the price. Your next bot-management decision may arrive as a line item on your hosting plan.

What actually happened

Per TechCrunch:

• The round. $100M Series C led by AVP, with Dawn Capital, MMC Ventures and Tera Ventures. Executive chairman Roi Carthy said the valuation rose four times since the 2025 raise.
• The product. Threat intelligence, certificate management, DDoS protection and traffic routing. Blackwall fingerprints the software behind each request and uses its own models to judge intent, so it can tell a person's AI agent from a malicious bot.
• The channel. Hosting, managed service and cloud providers pick the components, set their own prices and share revenue with Blackwall. Customers get a free tier that shows traffic and threats. Protection is the paid part.
• The plan. Expand in North America, Europe, Asia-Pacific and the Middle East, and build more tools for providers.

CEO Nikita Rozenberg framed the opportunity around AI agents that access and pay for web services, which will need systems to control access and authorization. Blackwall competes with Cloudflare, Akamai and Imperva. Cloudflare's AI Crawl Control already lets site owners allow, block or charge AI crawlers.

Why it matters for your business

The decision about which AI agents reach your store is moving down the stack. First it was a WAF rule you set. Now it can be a default your host turns on for every site on the server, sold under a name you have never heard of. That is useful if the defaults are good. It is a problem if a host-level rule blocks the shopping agent with a buyer behind it, and you only find out from a drop in checkouts.

So before you buy anything, ask your host three questions. Do you filter bot or AI agent traffic at the server level today? Which agents do you allow by default, and can I change that per site? Can I see the logs? The free dashboard Blackwall describes is a good start: look at your traffic before you pay to block it.

And price the stack you already have. If you run Cloudflare in front of a host that now adds its own agent filter, you pay twice and debug two rule sets.

Sources: TechCrunch.