VXNDEFENSE
🇺🇸 Austin, Texas • Global Operations
VXN Defense delivers elite cybersecurity operations — from adversarial emulation to 24/7 threat hunting. Protect what matters most.
"The only constant in cybersecurity is change. We don't just adapt — we anticipate."
— John Vexner, CEO & Founder, VXN DefenseFull-scope adversary simulation. Think like an attacker — because they already are. Our red team operators use TTPs mirroring real-world APT groups.
24/7 threat hunting, detection engineering, and incident response. We build, tune, and operate your defense posture.
Bridging offense and defense. Continuous validation of security controls through collaborative adversary emulation.
Comprehensive network penetration testing covering perimeter, internal segmentation, and cloud environments.
Deep-dive application security assessments following OWASP Top 10 and beyond.
Cloud-native penetration testing and misconfiguration assessment for modern enterprises.
Real-world phishing, vishing, and physical security assessments.
Gap assessments and compliance-driven penetration testing.
24/7 breach response, digital forensics, and containment.
VXN Defense was born from the trenches of real-world cyber warfare. Our founders came from NSA, US Cyber Command, and top-tier private sector IR teams. We saw the gap between compliance checklists and actual security — and we built a company to close it.
Today, we protect critical infrastructure, financial institutions, healthcare systems, and Fortune 500 enterprises. Every engagement is led by senior consultants — no junior-only teams, no outsourced testing.
Schedule a confidential consultation. No obligation, just real security advice.