€100 million investment turns Estonian startup Blackwall into a unicorn

28.10.2026

Cyberattack prevention startup Blackwall has raised €100 million from investors in a funding round that values the company at an estimated $2.2 billion.

Blackwall specializes in filtering bot traffic, distinguishing malicious automated programs from other web traffic. Estonia-linked venture capital firm Tera Ventures made its first investment of approximately $300,000 in Blackwall six years ago.

"We have been monitoring their development, looking at how they were progressing, how their first pilot customers were responding to the service, how the product was developing and what feedback they were getting from the market. Based on that, I think we participated in another two funding rounds before they started raising capital in London," said Stanislav Ivanov, founding partner of Tera Ventures.

The latest investment has pushed the company's valuation above $2 billion.

"There are several investors, but the lead investor is ABP, a global growth fund. Their funds have a combined value of $2 billion to $3 billion. This round has established a valuation of $2.2 billion, but if the company continues to grow, we will see higher figures in the future," Ivanov said...

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