Defense-grade security, built for scale.
QuantumDefenseWorks tests, monitors, and hardens critical infrastructure for businesses that can't afford a breach — clear scope, fixed EUR pricing, and a named security lead on every engagement.
Accepting 2 new engagements this quarter
Six ways we reduce your attack surface.
From a single assessment to full-time monitoring, scoped clearly before any engagement begins.
Penetration Testing & Red Teaming
Simulated attacks against your applications, network, and people to find exploitable weaknesses before adversaries do.
24/7 Security Operations Center
Continuous log monitoring and alert triage, with real threats escalated to a human analyst in minutes, not hours.
Incident Response & Threat Containment
Rapid containment and root-cause investigation when something's already gone wrong, with a clear remediation plan after.
Cloud & Infrastructure Security Audits
A structured review of your cloud configuration, permissions, and network architecture against known misconfiguration risks.
Zero Trust Architecture Consulting
A practical migration path toward identity-based access control, without disrupting how your team already works.
Regulatory Compliance
GDPR, NIS2, and ISO 27001-aligned gap analysis, with a prioritized roadmap your team can actually execute.
Three tiers. Zero ambiguity.
Every package includes a written risk report and a follow-up review call.
Perimeter
Essential protection for small teams who need a clear starting point.
- External vulnerability scan
- 1 target system
- Written risk report
- 1 follow-up review call
Fortress
Continuous defense for growing businesses that can't afford downtime.
- Monthly vulnerability scans
- Up to 5 assets monitored
- Quarterly penetration test
- 24/7 alert monitoring · 30 days support
Sovereign
Full-spectrum protection for regulated or high-value environments.
- Unlimited asset monitoring
- Full red team engagement
- Compliance audit (GDPR/NIS2/ISO 27001)
- Named security lead · 60 days support
The standalone checks grid
Small, focused security checks sold individually — every "Order Now" takes you straight to Contacts.
From scope to remediation.
Four steps, always in this order, so nothing gets tested without your sign-off.
Scoping Call
We define exactly what's in scope and agree a fixed EUR price in writing.
Testing & Monitoring
Assessment begins on the agreed schedule. Critical findings are flagged immediately.
Findings Report
A written, risk-prioritized report — what's exploitable, how bad it is, what to fix first.
Review & Remediation
We walk through the report live, so your team knows exactly what to fix and how.
Findings you can act on, or we revisit them.
Every engagement includes a follow-up review call within 7 days of your report. If a finding is unclear or missed the mark, we revisit it — full terms are on our Refund Policy.
QuantumDefenseWorks vs. the usual options.
With QuantumDefenseWorks
- Fixed EUR pricing, published up front
- Named security lead on every engagement
- Written report in 3 days, not 3 weeks
- Critical alert response under 90 minutes
- Compliance-ready reporting included
Typical MSSP / IT Provider
- Custom quote only, after negotiation
- Routed through account managers
- 1–2 week turnaround, often verbal
- Next business day, typically
- Often a separate add-on
Frequently asked questions.
Our Pricing page lists three fixed packages plus an à la carte grid — every price is in EUR and published up front, no hourly billing.
We scope every test to avoid production disruption and schedule anything higher-risk during agreed maintenance windows.
Yes — a mutual NDA and a signed authorization letter are standard before any assessment begins.
A list of in-scope systems, written authorization, and a short call to confirm testing windows. We send a simple intake form after booking.
Yes — our Regulatory Compliance service maps your current state against GDPR, NIS2, and ISO 27001 requirements with a prioritized roadmap.
Yes — assessments and monitoring are delivered remotely, so location never limits coverage. We've worked with clients across the EU.
Security built for whatever's next.
QuantumDefenseWorks started in Madrid out of frustration with security reports nobody could act on — dense PDFs full of jargon, with no clear sense of what to fix first.
The firm stays deliberately focused. Every engagement is led directly by a senior security lead, backed by a specialist bench for larger monitoring contracts — never a rotating cast of junior analysts learning your systems on the clock.
The standard is simple: findings should be specific, prioritized, and explainable to whoever has to actually fix them — a developer, an IT manager, or an executive with no security background.
Clients range from Madrid fintech and healthcare providers to regional retail and logistics companies, all needing the same thing: a clear answer about where they're exposed, and a straight path to closing the gap.
The team behind the reports.
Olga Shvetcova
Founder & Chief Security OfficerYour point of contact for every engagement — assessments and reports run through Olga directly.
Rubén Delgado
Principal Penetration TesterLeads hands-on testing and 24/7 monitoring coverage across client environments.
Don't take our word for it.
"They found a misconfigured storage bucket our internal team had missed for months. The report was clear enough that a junior developer fixed it the same day."
"Fixed pricing meant our finance team approved the engagement in one meeting. No back-and-forth over scope creep afterward."
"When a real incident happened, they were on a call with us in under fifteen minutes. That responsiveness alone justified the retainer."
"The NIS2 gap analysis gave us an actual roadmap instead of a generic checklist. Our auditor accepted it without a single revision."