OT Pen Testing: Why Trust, Culture & Hands-On Experience Matter Most

Effective OT penetration testing isn't just about finding vulnerabilities, it's about building trust.

In this episode of Protect It All, host Aaron Crow is joined by Oren Niskin and Reynaldo Gonzalez for an engaging discussion on the evolving role of penetration testing in operational technology (OT) environments.

Drawing from years of experience in industrial operations, IT, and OT cybersecurity, Oren and Reynaldo explain why successful OT security assessments require far more than technical expertise. They explore how trust, communication, and collaboration help bridge the gap between security teams and operations, making penetration testing a valuable business tool rather than something to fear.

The conversation also highlights the importance of diverse career paths, hands-on learning, and mentoring the next generation of cybersecurity professionals. From network segmentation and risk communication to creating realistic lab environments, this episode offers practical lessons for anyone responsible for securing critical infrastructure.

Key Learnings: 

• Why trust is essential for successful OT penetration testing
• How IT and operational experience strengthen OT security teams
• The value of network segmentation in reducing cyber risk
• Why "doing nothing" is no longer an acceptable cybersecurity strategy
• How organizations can bridge the gap between safety, operations, and security
• Practical ways to develop the next generation of OT cybersecurity professionals

Key Moments: 

07:00 Oren's technology and security approach

15:04 Discussing network security measures

19:16 Building Trust in Business Relationships

26:17 Understanding and planning security architecture

30:16 Network management and rule assessment

33:39 Managing and Assessing Tool Overload

38:39 Analyzing tool overlap and complementarity

48:41 Building a trusting team culture

49:48 Encouraging Open Communication

56:34 Getting into cybersecurity without IT experience

01:04:56 Entry-level ICS training courses

Whether you're an OT engineer, penetration tester, security leader, or just beginning your cybersecurity journey, this episode delivers practical insights into protecting industrial environments while building stronger relationships across teams.

Tune in to discover why the most successful OT penetration tests don't just identify vulnerabilities they build trust, strengthen teams, and improve security for the long term.

About the guests: 

Oren Niskin is Principal OT Security Engineer at GuidePoint Security. His 20-year arc runs from the US Navy as a Nuclear Electrician's Mate, to Electronics Technician on offshore drilling rigs, to office OT/IT management, to OT cybersecurity consulting at EY, and now into OT cyber engineering at GuidePoint. He also runs Packets Or It Didn't Happen, a YouTube livestream where he builds a factory-realistic PLC and HMI training kit on camera (the open-source PLC Trainer Kit), aimed at helping newcomers get hands-on with OT for under $500.

Link to connect Oren Niskin:

LinkedIn: https://www.linkedin.com/in/orenniskin/

YouTube: https://www.youtube.com/@PacketsOrItDidntHappen

PLC Trainer Kit (GitHub): https://github.com/oniskin/PLC-Trainer-Kit

LinkedIn Group: https://www.linkedin.com/groups/17708001/

Reynaldo Gonzalez is a recognized cybersecurity thought leader with 18+ years of experience helping organizations strengthen cyber resilience and secure critical infrastructure. His expertise spans cybersecurity strategy, IT/OT security, AI security, risk management, and digital transformation, complemented by a passion for education, innovation, and industry collaboration.

Link to connect Reynaldo Gonzalez: 

LinkedIn: https://www.linkedin.com/in/reynaldoglz/

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