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Estonian cybersecurity and network traffic management company Blackwall has completed a $100 million Series C funding round at a valuation of $2.2 billion. The round was led by AVP, with participation from Dawn Capital, MMC Ventures and Tera Ventures. Its flagship product, GateKeeper, filters malicious bots, application-layer DDoS attacks and brute-force login attempts before traffic reaches customers' applications, and also offers firewalls, load balancing and optimization tools that distinguish legitimate traffic from AI traffic. The company was formerly named BotGuard and was renamed Blackwall in March 2025 alongside its Series B funding. The new funds will be used for global expansion and to deepen the platform. Other reports noted that this funding round comes just weeks after it joined the ranks of Estonian unicorns.
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Oct 21
SiliconANGLE
Blackwall Raises $100M Series C at a $2.2B Valuation to Expand Its Network Traffic Optimization and Management Platform
Estonian cybersecurity and network traffic management company Blackwall has raised a $100 million Series C at a $2.2 billion valuation, led by AVP, with participation from Dawn Capital, MMC Ventures, and Tera Ventures. Its flagship product, GateKeeper, filters malicious bots, application-layer DDoS attacks, and brute-force login attempts before traffic reaches customer applications, and also offers firewalls, load balancing, and optimization tools that distinguish legitimate traffic from AI traffic. The company was formerly named BotGuard and rebranded as Blackwall in March 2025 alongside its Series B funding; the new funds will be used for global expansion and deepening the platform.
Oct 20
Tech.eu
Blackwall Raises $100M Series C at $2.2B Valuation
Cybersecurity company Blackwall has raised a $100 million Series C at a $2.2 billion valuation, just weeks after joining Estonia's unicorn ranks. The round was led by AVP, with participation from Dawn Capital, MMC Ventures, and Tera Ventures. Its platform covers bot mitigation, DDoS protection, web application firewall, and AI agent traffic management, deployed within hosting provider infrastructure, filtering billions of requests daily.