Advanced Adversarial Testing for the AI-Adversary Era
We Validate Every
Layer of Your Applications. Cloud Environments. Networks. AI/LLM Systems. Hardware & Devices. OT/ICS Environments. Facilities.
We combine elite offensive security experts with emerging technologies, including AI, automation, and advanced analytics, to continuously uncover and eliminate hidden risk before attackers can exploit it.
Trusted Across Critical Industries
What Sets OnDefend Apart
To stop advanced, persistent adversaries, you need a team that can act like one.
Security Testing Services
To stop advanced, persistent adversaries, you need a team that can act like one.
Network Penetration Testing
We identify exploitable vulnerabilities and attack paths across internal, external, and wireless networks to assess network security risk.
Application Penetration Testing
We assess web, mobile, desktop, and API applications to uncover exploitable vulnerabilities, business logic flaws, and attack paths through dynamic and static testing.
Cloud Penetration Testing
We assess cloud environments to uncover misconfigurations, identity weaknesses, and attack paths across AWS, Azure, GCP, and other cloud platforms.
AI and LLM Penetration Testing
We assess AI and LLM systems to uncover weaknesses that could lead to manipulation, data leakage, or unsafe behavior.
Hardware & Integrated Systems Testing
We assess devices, firmware, and supply-chain integrity to uncover hidden vulnerabilities, undocumented components, and unauthorized communications that lead to compromise.
Red Teaming Services
We emulate determined adversaries to demonstrate how attackers penetrate, persist, and achieve real-world impact across people, process, and technology.
Purple Teaming Services
We run collaborative attack simulations that unite offensive and defensive teams to identify protection, detection, and response gaps, tune defenses, and measurably improve resilience.
Social Engineering Testing
We conduct realistic phishing, vishing, smishing, and physical deception testing to evaluate how people and processes respond to human-focused attack techniques.
Continuous Attack Path Elimination.
The Next Evolution of Penetration Testing for the Age of AI-Powered Attackers.
Attack Automation
Automates offensive testing at scale.
Attack Path Intelligence
Identifies possible attack paths.
Operator Guidance
BlindSPOT directs the team where to focus.
Attack Path Validation
Validates the paths that only humans can.
Remediation Acceleration
Prioritizes fixes that collapse paths.
Compounding Intelligence
Team feeds all data back into BlindSPOT.
What Our Clients Have to Say
We Give You the Competitive Advantage
By combining elite red team operators, threat intelligence, and AI-powered capabilities we ensure you have a decisive advantage over adversaries.
Elite Red Team Operators
Senior offensive security engineers with decades of real-world adversary experience across enterprise, government, and critical infrastructure, test your environment to uncover attack paths that traditional testing misses.
Real-World Attack Behavior
Our team emulates real-world attack behavior that goes beyond known techniques and playbooks, incorporating creativity and adaptation to show how compromise actually unfolds.
Proprietary Automation & AI Technology
Our automation and AI accelerate testing, correlate signals, and scale complex validation without sacrificing depth, delivering the efficiencies modern security programs expect.
Commercial & Proprietary Intelligence
We fuse commercial intelligence with our proprietary research to identify emerging exposures, shifting attack paths, and zero-day indicators.
Continuous Validation & Improvements
Our Continuous Attack Path Elimination (CAPE) program identifies drift, new weaknesses, and evolving attack paths as your systems change, ensuring your defenses stay aligned with real adversary behavior.
News and Insights
Stay ahead of emerging threats with research and guidance from our offensive security team.
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OnDefend Named No. 686 on the 2026 Inc. 5000 List
OnDefend ranks in the top 14% in the country for three-year revenue growth as it marks a decade in business and the launch of the Continuous Attack Path Elimination program.
Read More -
Inside Cyber Shield: Building the Largest Unclassified Cyber Exercise in the U.S.
OnDefend’s Aaron Rosenmund leads the Red Team behind the Cyber Shield exercise. Here’s how that offensive tradecraft shapes the work we do for clients.
Read More -
Cybersecurity Risk Reduction: The 90/10 Rule
The 90/10 mindset suggests a fresh perspective on cybersecurity risk reduction.
Read More
See the rest of your risk.
Start a Conversation.
Understand your real exposure with guidance from our security experts.
