Janusz Niewiadomski
President and Co-Owner @ ISEC
Warsaw, Poland
Janusz Niewiadomski is a pre-seed investor at ISEC in Warsaw focused on Finance and IT Management. Janusz Niewiadomski is the President and Co-Owner of ISEC. He previously worked at COSEINC as a Senior Security Researcher.
- Total investments:
- 2
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Janusz Niewiadomski invests in
Stages Janusz Niewiadomski invests in
Countries Janusz Niewiadomski invests in
Round sizes
Round size
- Pre-Seed
- $1.4M–$1.4M
Investment Focus
Industry
- Finance 1 (50%)
- IT Management 1 (50%)
- Telecommunications 1 (50%)
- Enterprise Software 1 (50%)
- Identity Management 1 (50%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Defguard
|
Defguard is an open-source on-premise security platform and was created to give businesses powerful capabilities for safe access control. | $1.4M / Pre-Seed / May 21, 2025 | |
|
Defguard
|
Defguard is an open-source on-premise security platform and was created to give businesses powerful capabilities for safe access control. | $1.4M / Pre-Seed / May 21, 2025 |
Co-Investors
About ISEC
ISEC offers penetration tests, source code analysis, vulnerability assessment, social-engineering, project support, research and development. They also offer to test their compliance with the clients security requirements.
ISEC Contacts
| Name | Phone | Socials | |
|---|---|---|---|
|
Janusz Niewiadomski
President and Co-Owner
|
|||
4 more contacts available
Access 48,091 investors
822 industries, 177 countries. Updated daily. Emails and phones included.
Browse database — It's Free!
Find investors for your startup
Search 48,091 investors by industry and country. Emails and phones included.
Similar Investors
Similar industry
Featured in Investor Lists
Recommended lists
FAQ
What does Janusz Niewiadomski invest in?
Janusz Niewiadomski invests primarily in Finance, IT Management and Telecommunications startups, most often at Pre-Seed stage. Most of the 2 investments tracked by Shizune back companies in Poland. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Janusz Niewiadomski's check size?
Janusz Niewiadomski typically joins rounds of $1.4M–$1.4M at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Janusz Niewiadomski participates in.
When did Janusz Niewiadomski last invest?
The most recent investment recorded for Janusz Niewiadomski closed in May 2025. Shizune tracks 2 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
Contact your first 100 investors today
Find who invests in your industry, stage, and country. Download investor list with emails in 5 minutes.
Find investors — It's Free!
Continue with Google
Continue with LinkedIn
