Blackwall, a web infrastructure and cybersecurity company based in Estonia, said it has closed a $100 million Series C round that values the business at $2.2 billion. The company sells tools that let web hosting companies, cloud providers and managed service providers shield their customers' websites from bots, agents and other malicious traffic.
The centerpiece of Blackwall's offering is GateKeeper, which screens incoming requests and blocks malicious bots, application-layer distributed denial-of-service attacks and brute-force login attempts before they reach customer applications. The company also provides firewalls, load balancing and optimization tools, including technology that separates legitimate and artificial intelligence traffic from would-be attackers.
Co-founder and Chief Executive Nikita Rozenberg said web traffic is growing more automated, distributed and complex while the infrastructure behind it stays fragmented. He said Blackwall's goal is to build a traffic management ecosystem that unites those pieces, and that the new capital will support international expansion and further development of the platform so hosting and infrastructure providers can take part in the next generation of the web.
AVP led the round, joined by existing investors Dawn Capital, MMC Ventures and Tera Ventures. AVP General Partner Warda Shaheen said Blackwall already sits in front of millions of websites and argued that its position becomes more essential as a larger share of web traffic comes from agents. She said that reasoning drove AVP's decision to lead the investment.
Blackwall's model is built on partnerships with hosting and cloud providers, who use its services to filter unwanted traffic, reduce operating costs and speed delivery. Because the platform is modular, those providers can select individual features and resell them as their own products, adding web security offerings and revenue without developing or maintaining the underlying technology.
The company was known as BotGuard until March 2025, when it took the Blackwall name alongside its Series B round. The name refers to Cyberpunk 2077, the video game published by CD Projekt Red, in which the Blackwall is a digital barrier protecting the Net from rogue artificial intelligences.
Blackwall's raise lands in a web hosting market that Grand View Research Inc. measured at $150 billion in 2025 and projects to reach $178 billion by the end of this year, with a forecast of $506 billion by 2033. Grand View attributes the market's growth primarily to expanding startup and small-business activity online.
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