Best Cybersecurity Companies in Tallinn, Estonia
The 54 best Cybersecurity companies in Tallinn, Estonia in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Veriff.
Our analysis of 174 Cybersecurity companies
$16.2b in tracked funding; 96% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Cybersecurity companies in Tallinn
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Veriff 🦄 AI based identity verification software | $200M | 53 mo ago | Series C | Kaarel Kotkas Co-Founder & CEO | 2015 | WordPress Block EditorWordPressMySQL+48 | — |
| 2 | Blackwall Provider of web security and traffic filtering solutions for hosting providers | $63M | 16 mo ago | Series B | Denis Prochko Co-Founder & CTO | 2019 | RubyAnimate.cssTailwind CSS+13 | 1 partnership |
| 3 | Binalyze Developer of automated digital forensics and incident response platform software | $31M | 34 mo ago | Series A | Emre Tinaztepe Founder & CEO | 2010 | HubSpot CMS HubApple iCloud MailGoogle Workspace+26 | 2 launchs |
| 4 | Agrello Platform offering legal e signature software | $30M | 107 mo ago | Seed | Teddi Rull Co-Founder | 2017 | Node.jsTailwind CSSReact+17 | — |
| 5 | Botguard Cloud-based solutions for website security | $14M | 28 mo ago | Series A | — | 2019 | — | — |
| 6 | Salv Provider of a platform for financial crime detection and intelligence sharing | $13M | 31 mo ago | Series A | Jeff Mcclelland Co-founder & COO | 2018 | Apple iCloud MailGoogle WorkspaceVarnish+13 | 1 partnership · 2 awards |
| 7 | CybExer Provider of a simulation platform for cybersecurity training | $8M | 18 mo ago | Series A | Andrus Kivisaar CEO | 2016 | HubSpot CMS HubApple iCloud MailMicrosoft 365+12 | 1 job opening |
| 8 | Lossless Platform offering web3 security architecture and exploit mitigation tools | $2M | 61 mo ago | Seed | Vygandas Masilionis Co-Founder & CEO | 2021 | Animate.cssReactGatsby+9 | — |
| 9 | Dashbird Platform offering debugging and monitoring tools for serverless applications | $2M | 75 mo ago | Seed | Taavi Rehemagi Co-Founder | 2017 | WordPress Block EditorWordPressApple iCloud Mail+25 | — |
| 10 | Fleep Provider of cloud based secure messaging application | $2M | 133 mo ago | Seed | — | 2012 | ReactNginxAmazon Web Services+7 | — |
| 11 | CAV Provider of cloud and AI-based facial recognition solutions for enterprises | $337K | 48 mo ago | Seed | Mihhail Tarassenkov Co-Founder & CEO | 2020 | — | — |
| 12 | DigiFlak Hardware security device based Fast IDentity Online (FIDO) solution | $322K | 103 mo ago | Funding Raised | — | 2013 | — | — |
| 13 | Roksnet Provider of secure data exchange platform | $116K | 93 mo ago | Funding Raised | — | 2016 | — | — |
| 14 | Allpass.ai Provider of a single tool for compliance officers to manage KYC and AML | $100K | 13 mo ago | Seed | Viktor Plotnikov Co-Founder | 2020 | SanityNode.jsReact+16 | — |
| 15 | Mellyn AI based authentication API that analyzes login attempts | $100K | 49 mo ago | Deadpooled | — | 2022 | — | — |
Top 12 Cybersecurity companies in Tallinn
#1
Series B · Tallinn, Harju County · founded 2019$62.7Mraised▾
Provider of web security and traffic filtering solutions for hosting providers. The company’s system is engineered for web hosting providers to safeguard assets, data centers, and web clusters. Operating at the web traffic entry point, the system performs traffic inspection and filtering to neutralize malicious requests. It mitigates threats, including distributed denial-of-service attacks, brute-force attempts, and automated bot traffic.
- Mar 2025Series B$49M
- Mar 2024Series A$13.1M
- Feb 2021Seed—
- Oct 2020Seed$590.5K
#2
Series A · Tallinn, Harju County · founded 2016 · 47 employees$8.1Mraised▾
Cybexer Technologies provides a simulation platform for cybersecurity training. The products offered by the company are CybExer Range, Cyber Hygiene, and Exercise Management Toolkit. CybExer Range platform is on premise pay as you go solution for complex technical cybersecurity, Cyber Hygiene is an e Learning platform and risk evaluation tool which provides a solution for human risk behavior mitigation.
- Jan 2025Venture Debt$1.6M
- Dec 2023Grant (prize money)$530.1K
- Feb 2022Series A$5.7M
- Oct 2019Grant (prize money)—
#3
Seed · Tallinn, Harju County · founded 2020$100Kraised▾
Provider of a single tool for compliance officers to manage KYC and AML. It is an online platform that provides global online identity verification solutions for businesses, focusing on KYC, KYB, and AML compliance. They offer secure and transparent customer data protection, making customer onboarding efficient and intuitive. It also helps to eliminate the fraud, speed up the onboarding of the new customers, and promote the overall user experience with Identity Verification.
- Jun 2025Seed$100K
#4
Veriff 🦄Series C · Tallinn, Harju County · founded 2015 · 269 employees$200Mraised▾
AI based identity verification software. It provides a verification process involves cross-referencing images of the customer with identity information held in government databases, face comparison, document validation, video analysis, device and network fingerprinting, and registry checks. It offers verification to online businesses for fraud prevention, compliance, and customer protection.
- Jan 2022Series C$100M
- Apr 2021Series B$69M
- Jul 2020Series B$15.5M
- Jun 2018Series A$7.7M
#5
Series A · Tallinn, Harju County · founded 2010 · 3 employees$31.2Mraised▾
Developer of automated digital forensics and incident response platform software. The platform provides capabilities for threat hunting, alert validation, and triage. It offers remote evidence collection and analysis across various operating systems. The software integrates with security information and event management, endpoint detection and response, and security orchestration, automation and response systems.
- Sep 2023Series A$19M
- Feb 2022Seed$10.4M
- Feb 2021Seed$1.8M
#6
Series A · Tallinn, Harju County · founded 2019 · 7 employees$13.7Mraised▾
Developer of a cloud-based website protection software designed to protect websites from malicious bots, crawlers, scrapers, and hacker attacks. The company's platform blocks bad bot traffic in real-time, while granting unrestricted access to the website to human users, search engines, and affiliate bots, enabling customers to protect their business from hackers, spammers, content thieves, and competitors.
#7
Series A · Tallinn, Harju County · founded 2018 · 47 employees$13.1Mraised▾
Provider of a platform for financial crime detection and intelligence sharing. The platform offers tools for compliance, screening, monitoring, and risk scoring. It facilitates intelligence exchange and collaborative investigations. The platform helps financial institutions to detect money laundering and stop fraud.
- Dec 2023Series A$4.2M
- Jan 2023Series A$4.4M
- Dec 2020Seed$1.8M
- Dec 2019Seed$2M
#8
Seed · Tallinn, Harju County · founded 2017 · 6 employees$30.1Mraised▾
Platform offering legal e signature software. The platform offers contract management and e- signature solutions. It helps users to manage and sign documents. It allows users to create documents by using text editor tools. It helps users to have control over the signing process and store all the contracts in the cloud. It simplifies the document management and e signing process from the initial agreement to finalization of contract.
- Aug 2017ICO$30.1M
- 2017Seed—
#9
Seed · Tallinn, Harju County · founded 2021 · 10 employees$2.2Mraised▾
Platform offering web3 security architecture and exploit mitigation tools. By combining community-driven threat identification strategies the protocol efficiently tracks suspicious on-chain activity, freezing malicious transactions, and recovering stolen funds.
- Jun 2021ICO$450K
- May 2021Seed$2.2M
#10
Seed · Tallinn, Harju County · founded 2017 · 2 employees$2.1Mraised▾
Platform offering debugging and monitoring tools for serverless applications. The platform helps monitor the health and activities of the lambda functions. It also helps dig deep into lambda analytics across serverless applications. Users can access all the logs of the serverless applications at any particular time and figure out the failed requests.
- Apr 2020Seed$2.1M
- May 2018Seed—
#11
Seed · Tallinn, Harju County · founded 2020 · 1 employees$337.1Kraised▾
Provider of cloud and AI-based facial recognition solutions for enterprises
- Jul 2022Seed$337.1K
#12
Seed · Tallinn, Harju County · founded 2012 · 7 employees$2.1Mraised▾
Fleep is a provider of cloud based secure messaging application. The features of the product include audio, video calling, and screen sharing, integration with technology stacks, conversation collaborations, admin control over accounts and messaging histories, etc.
- Jun 2015Seed$892.9K
- Mar 2014Seed$500.7K
- Aug 2013Seed$347K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Cybersecurity coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Who's building cybersecurity IP in Tallinn
Infosys Ltd. dominates Tallinn's cybersecurity patent activity with all 143 filings, though output has sharply cooled from a 2015 peak of 32 to single digits most recent years.
- infosys ltd.143tallinn
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.