
Blackwall (formerly BotGuard) is a security and web infrastructure company founded in 2019 by Nikita Rozenberg (CEO) and Denis Prochko (CTO). The company provides AI-enabled web traffic management solutions by partnering with Hosting Services Providers (HSP’s), Managed Service Providers (MSPs) and eCommerce Platforms, who typically host thousands, to hundreds of thousands of websites.

Blackwall (formerly BotGuard) is a security and web infrastructure company founded in 2019 by Nikita Rozenberg (CEO) and Denis Prochko (CTO). The company provides AI-enabled web traffic management solutions by partnering with Hosting Services Providers (HSP’s), Managed Service Providers (MSPs) and eCommerce Platforms, who typically host thousands, to hundreds of thousands of websites.
Flagship product: GateKeeper — a high-availability reverse-proxy for real-time traffic inspection and mitigation
Threat coverage: Mitigates malicious bots, L7 DDoS, brute-force attacks while providing WAF, caching, rate limiting
Recent funding: €45M Series B (Mar 2025) led by Dawn Capital
Founders: Nikita Rozenberg (CEO) and Denis Prochko (CTO)
Rebrand: Rebranded from BotGuard (legal name Botguard OÜ) to Blackwall
Automated web threats and malicious traffic targeting hosting providers, managed service providers and large multi-tenant web platforms.
2019
Cybersecurity / Web infrastructure
€45M
Company announced rebrand from BotGuard to Blackwall; existing investor MMC Ventures participated.
€12M
“Series B led by Dawn Capital (MMC Ventures participated); third-party profiles list multiple investors (Crunchbase lists eight investors, including Tera Ventures).”
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