Built for the Most Capable Threat Actors. Deployed for You.
SystemDown was founded by offensive security practitioners who spent years operating on the other side of enterprise defenses — in government programs, military units, and elite commercial red teams. We built the company we wished existed when we were defenders.
Expose What Attackers Would Find
Most organizations invest heavily in defensive tools but rarely validate whether those tools actually work against real adversary techniques. The result is a false sense of security — and an unknown attack surface that motivated attackers will find.
SystemDown exists to close that gap. We simulate the techniques of advanced threat actors in your environment, under controlled conditions, so your security team can see exactly what needs to improve.
Our work is not a compliance checkbox. It is an operational stress test of your entire security program.
- Authorization before action, always
- Intelligence-driven over methodology-driven
- Report findings, not just vulnerabilities
- Purple team is the real deliverable
- Responsible disclosure for all research
How We Operate
Grounded in Original Research
Our operators conduct and publish original vulnerability research. This keeps our techniques current with the actual threat landscape — not just textbook attack patterns.
Former Offensive Security Practitioners
Every operator on our team has a background in real-world offensive work — government, military, or high-stakes commercial engagements. We do not hire theorists.
Security Improvement, Not Theater
Our engagements are designed to drive measurable security improvements. We care about what happens after the report — detection coverage, remediation, and validation.
Think Like the Threat
We study real threat actor tooling, TTPs, and targeting patterns. Every engagement is informed by current intelligence, not frameworks designed years ago.
Ready to engage?
We scope engagements within 5 business days.