Blackwall jumps 368% to become Estonia’s newest unicorn
Tech.eu Cate Lawrence
Blackwall hit a €1B valuation and became Estonia’s newest unicorn. It jumped 368% in a year, while Estonia’s top tech names still do most of the heavy lifting.
Based on reporting by Tech.eu, Cate Lawrence — read the original for the full story.
Summary, retelling and take written by AI under human oversight; images are AI-generated illustrations. How we work · Report an error
Blackwall has crossed the €1 billion mark and landed fifth in TopTech 2026, the annual ranking of Estonia’s 30 most valuable tech companies. That puts the cybersecurity firm into unicorn territory and makes it this year’s biggest riser, after its valuation climbed from about €221 million to €1.03 billion in 12 months.
The business behind the jump is straightforward: Blackwall sells security infrastructure, and its GateKeeper product filters malicious traffic before it reaches customer applications. Indrek Uudeküll of Prudentia Tallinn, who led the ranking, says that kind of company can’t be priced by product alone. The sales channel matters. So does the value created for customers. Rando Rannus, co-author of TopTech, says the figure is an implied valuation based on revenue and benchmarks from listed cybersecurity companies and peers that raised money in the past year.
The broader table tells a more complicated story. Estonia’s 30 most valuable tech companies were worth €26.4 billion in total, down from €27.7 billion a year earlier. But that decline is heavily shaped by the top of the list. Wise is valued at €10.98 billion and Bolt at €7.09 billion, and together they make up 68.3 per cent of the table. The top five account for 84.6 per cent, which means a swing in just a few giants can flatten the whole ranking.
Below that, the picture looks healthier. Defence technology is now the largest sector in the table by company count, with seven firms worth €1.07 billion combined. Frankenburg, Threod and Milrem all rose, while DefSecIntel fell. KrattWorks, another defence name in the ranking, says its growth comes from years in drones, ownership of its full tech stack and a manufacturing model that can assemble systems anywhere in allied Europe, including in the customer’s own country.
The other trend running through the list is AI-shaped discipline. Rannus says founders in their twenties now ask how few people they need, not how many, and some companies are reaching with five to fifteen people what used to take much bigger teams and far more capital. That may not stop Wise and Bolt from dominating the top end. But it does suggest Estonia’s next wave is getting built with less bloat and more bite.
My take — AI-written commentary, not fact-checked reporting
Estonia’s startup story is starting to look less like a race to the biggest headcount and more like a hunt for the sharpest unit economics. That’s healthier, and a lot less theatrical. Also, if a defence company can make “not needing a supplier or a re-export licence” sound like product strategy, the old SaaS playbook is clearly getting edited in public.
Read more about this at: Tech.eu