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Growing Threat of Converged Threat Actors

On the Nexus Podcast at S4, Mike Holcomb covers the growing alignment of state actors and hacktivists targeting OT. This convergence is risky because of the potential for high frequency, high impact attacks.

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Risk Management
Operational Resilience
Cyber Resilience
Federal
Healthcare
Industrial

Imminent National Cyber Strategy May Lean on Offense at the Expense of Defense

Megan Stifel
/
Feb 26, 2026
OT cybersecurity expert Dan Ricci writes about what OT asset management and visibility can reveal about an industrial environments, including the surfacing of risk signals, exposure of hidden dependencies, and insight about the efficacy virtual network segmentation policies and practices.
Industrial
Operational Resilience
Operational Technology
Cyber Resilience
Risk Management

From OT Asset Management to Insight: Turning Visibility Into Something That Matters

Dan Ricci
/
Feb 17, 2026
In this episode of the Nexus Podcast, CISA ICS Cybersecurity Lead Matthew Rogers discusses new guidance from the agency on the use of security operational technology (OT) protocols, titled “Barriers to Secure OT Communication: Why Johnny Can’t Authenticate.” The paper advocates for the use of secure versions of legacy OT protocols, or the adoption of open standards by OEMs, in order to bring authentication and integrity to OT protocol communication.
Cyber Resilience
Industrial
Operational Resilience
Operational Technology
Risk Management
Vulnerability Management

Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication

Michael Mimoso
/
Feb 18, 2026
Jose Emmanuel Galeana, OT Cybersecurity Manager for Cemex, a large building materials company in Mexico, discusses the importance of a comprehensive, up-to-date, centralized inventory of all OT assets in an industrial environment, and why it’s integral to effective asset management.
Nexus Conference
Operational Technology
Operational Resilience
Cyber Resilience

José Emmanuel Galeana Sobre la Ciber Resiliencia en la Industria de Materiales de Construcción

Michael Mimoso
/
Jan 20, 2026

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In this episode of the Nexus Podcast, CISA ICS Cybersecurity Lead Matthew Rogers discusses new guidance from the agency on the use of security operational technology (OT) protocols, titled “Barriers to Secure OT Communication: Why Johnny Can’t Authenticate.” The paper advocates for the use of secure versions of legacy OT protocols, or the adoption of open standards by OEMs, in order to bring authentication and integrity to OT protocol communication.
Cyber Resilience
Industrial
Operational Resilience
Operational Technology
Risk Management
Vulnerability Management

Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication

Michael Mimoso
Jay C. Catherine, a security architect for a major retailer, joins the Nexus Podcast to discuss best practices for logistics cybersecurity within the retail space. This includes securing not only distribution, but also the operational technology involved in these manufacturing processes.
Industrial
Internet of Things
Cyber Resilience
Operational Resilience
Operational Technology

Nexus Podcast: Jay Catherine on Securing Logistics, OT in Retail

Michael Mimoso
On this episode of the Nexus Podcast, Greg Garcia, Executive Director of The Health Sector Coordinating Council Cybersecurity Working Group, discusses the Sector Mapping and Risk Toolkit (SMART). SMART contains a set of 17 templates that enable healthcare organizations to map and visualize workflows, identify areas of risk, and where mitigations are most desperately needed.
Healthcare
Risk Management
Operational Resilience
Cyber Resilience

Nexus Podcast: Greg Garcia on the Sector Mapping and Risk Toolkit for Healthcare

Michael Mimoso
nexus_frenz.jpg
Healthcare
Vulnerability Management
Risk Management
Internet of Things
Cyber Resilience

Nexus Podcast: Christopher Frenz on Evidence-Based Security

Michael Mimoso

Essential Topics (for Security Leaders)

Discover expert insights on Risk Management, Cyber Resilience, Vulnerability Management, and more. Learn how top security leaders safeguard critical cyber-physical systems.
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Risk Management
Imminent National Cyber Strategy May Lean on Offense at the Expense of Defense Nexus Podcast: Mike Holcomb on the Intersection of Hacktivists and State Actors Debora Borel on IT/OT Convergence in Hospitals Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication
Cyber Resilience
Imminent National Cyber Strategy May Lean on Offense at the Expense of Defense Nexus Podcast: Mike Holcomb on the Intersection of Hacktivists and State Actors Debora Borel on IT/OT Convergence in Hospitals Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication
Healthcare
Imminent National Cyber Strategy May Lean on Offense at the Expense of Defense Debora Borel on IT/OT Convergence in Hospitals Moving from Visibility to Governance of CPS Adam Jurgensen on Medical Device Cybersecurity
Industrial
Imminent National Cyber Strategy May Lean on Offense at the Expense of Defense Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication From OT Asset Management to Insight: Turning Visibility Into Something That Matters 5 Trends Driving OT Security in 2026: From State-Sponsored Attacks to AI-Powered Threats
Vulnerability Management
Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication Adam Jurgensen on Medical Device Cybersecurity Noam Moshe on Hacking Enterprise-Grade IP Cameras 5 Trends Driving OT Security in 2026: From State-Sponsored Attacks to AI-Powered Threats

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Risk Management
Operational Resilience
Cyber Resilience
Federal
Healthcare
Industrial

Imminent National Cyber Strategy May Lean on Offense at the Expense of Defense

Megan Stifel
OT cybersecurity expert Mike Holcomb joins the Nexus Podcast live from S4 Conference in Miami to discuss how state actors may be leveraging hacktivists to target operational technology (OT). Holcomb has delineated these groups in what he calls a Converged Actor Framework that categorizes threat actors by the impact and frequency of their incidents. A converged actor is potentially the riskiest given the potential for high frequency high impact incidents.
Operational Technology
Risk Management
Cyber Resilience

Nexus Podcast: Mike Holcomb on the Intersection of Hacktivists and State Actors

Michael Mimoso
nexus-vid_debora-boriel.png
Nexus Conference
Healthcare
Cyber Resilience
Risk Management

Debora Borel on IT/OT Convergence in Hospitals

In this interview from Nexus Conference 2025, Debora Borel, Cyber Security Coordinator, Einstein Hospital Israelita in Sao Paolo, Brazil, explains how the…
Michael Mimoso
In this episode of the Nexus Podcast, CISA ICS Cybersecurity Lead Matthew Rogers discusses new guidance from the agency on the use of security operational technology (OT) protocols, titled “Barriers to Secure OT Communication: Why Johnny Can’t Authenticate.” The paper advocates for the use of secure versions of legacy OT protocols, or the adoption of open standards by OEMs, in order to bring authentication and integrity to OT protocol communication.
Cyber Resilience
Industrial
Operational Resilience
Operational Technology
Risk Management
Vulnerability Management

Nexus Podcast: CISA’s Matthew Rogers on Secure OT Protocol Communication

Michael Mimoso
OT cybersecurity expert Dan Ricci writes about what OT asset management and visibility can reveal about an industrial environments, including the surfacing of risk signals, exposure of hidden dependencies, and insight about the efficacy virtual network segmentation policies and practices.
Industrial
Operational Resilience
Operational Technology
Cyber Resilience
Risk Management

From OT Asset Management to Insight: Turning Visibility Into Something That Matters

Dan Ricci
Cyber-physical systems cybersecurity is a maturing practice, which means protection of these critical systems must become more programmatic. Stefano Scaramuzzino CISO of ASL Roma-1 and Fabio Battelli of Deloittte explain the first steps on this journey using ASL Roma-1's HOPE program as the model.
Cyber Resilience
Healthcare
Operational Resilience
Risk Management

Moving from Visibility to Governance of CPS

Fabio Battelli
Stefano Scaramuzzino
Adam Jurgensen, Medical Device Security Engineer at Valley Health Systems, brings us inside the roles and responsibilities of those experts overseeing connected devices inside healthcare organizations. Jurgensen describes the restrictions his role faces when it comes to updating and patching connected medical devices, the gamut of which may run from MRIs, CT, ultrasounds, to patient monitors, and defibrillators. Compensating controls, segmentation, and other cybersecurity strategies are key for keeping devices secure and patients safe in the event of an incident.
Nexus Conference
Healthcare
Vulnerability Management
Risk Management
Cyber Resilience

Adam Jurgensen on Medical Device Cybersecurity

Adam Jurgensen, Medical Device Security Engineer at Valley Health Systems, brings us inside the roles and responsibilities of those experts overseeing…
Michael Mimoso
Team82 vulnerability research lead Noam Moshe discusses his team’s expansive look into IP-based surveillance cameras manufactured by Sweden’s Axis Communications, a leading company in this space. Companies like Axis are selling more and more into Western enterprises given bans on certain Chinese technologies. Moshe’s research uncovered a number of vulnerabilities in the management framework used to oversee these devices, as well as the communication protocol in play. Attackers can exploit these issues to gain control of cameras, move onto the corporate network, and disrupt the safety of a business.
Nexus Conference
Internet of Things
Vulnerability Management

Noam Moshe on Hacking Enterprise-Grade IP Cameras

Team82 vulnerability research lead Noam Moshe discusses his team’s expansive look into IP-based surveillance cameras manufactured by Sweden’s Axis…
Michael Mimoso
Cybersecurity experts identify five trends that leaders responsible for cyber-physical systems protection programs and OT security must strategize around.
Cyber Resilience
Industrial
Operational Technology
Operational Resilience
Vulnerability Management
Risk Management

5 Trends Driving OT Security in 2026: From State-Sponsored Attacks to AI-Powered Threats

George V. Hulme