Advanced Adversarial services

We Validate Every
Layer of Your Applications. Cloud Environments. Networks. AI/LLM Systems. Hardware & Devices. OT/ICS Environments. Facilities. Supply Chain Risk.

We uncover the hidden risks traditional testing misses by combining our elite cyber operators with proprietary innovations and AI-driven intelligence to continuously reduce your security exposure.

Trusted Across Critical Industries

What Sets OnDefend Apart

To stop advanced, persistent adversaries,
you need a team that can act like one. 

Hidden risks in every layer.

  • Supply-Chain Threats
  • Hidden Backdoors
  • Covert C2 Channels
  • Stealthy Exfiltration 

Traditional testing only uncovers one third of this risk.

  • Known Vulnerabilities  
  • Common Misconfigurations  
  • Static Testing Scope  
  • Predictable Attack Patterns

We reveal the rest.

  • Advanced Attack Paths  
  • Zero-Day Exposures  
  • Controls Silently Failing  
  • Defense-In-Depth Breakdowns

Talk To an Ondefender

Network Hardware Applications Facilities Cloud OT/ICS AI/LLM Supply Chain

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. 

OnDefend Continuous Security Inspector

Go Beyond Traditional Testing to Find Your Hidden Risk

The OnDefend Continuous Security Inspector program (CSI) uses continuous, intelligence-driven red team testing and evolving offensive tradecraft to uncover hidden risk across network, software, cloud, hardware, IoT, and AI environments.

Continuous Threat Emulation
Persistent, adversary-style testing to uncover exploitable weaknesses

AI & Automation That Optimize Outcomes
Technology that uncovers missed insights 
and drives unmatched testing efficiency

Intelligence-Driven Methodology
Testing guided by proprietary intelligence and proven offensive tradecraft

Uncover Hidden Risk Others Miss
Exposure of real-world attack paths, zero-days, and silent control failures

What Our Clients Have to Say

“Their ability to bridge technical rigor with real-world execution is rare in the market.”

Cybersecurity & Resilience Practice Leader | Gartner

“OnDefend’s consistency and innovation delivers outcomes our technical teams rely on and our executives champion.”

Chief Information Security Officer | Popular Bank

“I’ve worked with OnDefend across my tenure as a CISO. They excel in delivering innovative security insights and exceptional service.”

Chief Information Security Officer | BigBear.ai

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 Security Inspector (CSI) 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.

See the rest of your risk.

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Understand your real exposure with guidance from our security experts.