

Startup · Germany
DEFENDERBOX
HQ Kreuztal, GermanyFounded 20241-10 employeesUpdated
We simulate real cyber attacks to uncover vulnerabilities and security gaps before they can be exploited by real hackers.
Funding1 round · $824K
- Equity raised
- $824K
- Latest
- $824KSeed · Jun 11, 2025
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Jun 11, 2025 | Seed | $824K | — | NRW.BANK | — | Reported |
- SeedLed by NRW.BANK$824KJun 11, 2025
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
People1
| Person | Role |
|---|---|
| Markus Schulte · LinkedIn ↗ | CEO & Founder |
Sources5
Profile3
- 1CompanyHomepage - DEFENDERBOX
DEFENDERBOX · Supports Organization · description, Organization · name, Organization · website
“We simulate real cyber attacks to uncover vulnerabilities and security gaps before they can be exploited by real hackers.”
- 2
Sixth-Domain · Supports Organization · kind
“{"group": "startups", "id": "e478c172-4a14-4218-af49-21fba62134df", "name": "DEFENDERBOX"}”
- 3DatabaseDEFENDERBOX company profile
Octen Business Search · Supports Organization · founded year, Organization · hq region
“founded_year: 2024”
Funding1
- 4
Nordic9 · Jun 11, 2025 · Supports Funding round · amount, Organization · ownership
“Defenderbox in a €715k funding round with NRW.BANK and business angels in Germany”
People1
- 5
Crunchbase · Supports Organization · country, Organization · employee range, Organization · hq city, Organization · linkedin url, Role
“country: DE”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.
