Jan Prerovsky
Angel Investor
Jan Prerovsky is a seed investor focused on Cyber Security and Network Security.
- Total investments:
- 1
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Jan Prerovsky invests in
Stages Jan Prerovsky invests in
Countries Jan Prerovsky invests in
Contacts
| Type | Contact | Validation |
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Investment Focus
Industry
- Cyber Security 1 (100%)
- Network Security 1 (100%)
- Communications Infrastructure 1 (100%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Whalebone provides zero-disruption protective DNS (PDNS) cybersecurity solutions designed for telcos, ISPs, critical-infrastructure enterprises, and government/public institutions. It provides millions of internet users with seamless digital life protection, keeping them secure against malware, phishing, ransomware, and other malicious digitalattacks – without the need to download anything. The European Commission has recognized Whalebone’s exceptional capabilities by appointing it the Consortium Leader for the European Union’s DNS4EU initiative. As the sole developer and operator of the official DNS resolver for the EU, in collaboration with a consortium of 13 members from 10 countries, governments and enterprises can leverage Whalebone's expertise in securing DNS servers to protect against evolving digital threats.The success of Whalebone Aura among global T1 telco providers validates the company’s ability to deliver robust DNS security that is effective, user-friendly, and brings value to their business. Whalebone’s products also include Peacemaker (for regional ISPs), Immunity (for enterprises), and DNS4GOV, all of which have proven instrumental in defending against threats to global DNS.Whalebone has more than 300+ customers around the globe and 100+ team members worldwide, with a mission is to bring cybersecurity to 1 billion people. | $651K / Seed / Aug 12, 2019 |
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FAQ
What does Jan Prerovsky invest in?
Jan Prerovsky invests primarily in Cyber Security, Network Security and Communications Infrastructure startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Czech Republic. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Jan Prerovsky?
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When did Jan Prerovsky last invest?
The most recent investment recorded for Jan Prerovsky closed in Aug 2019. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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