Xona Targets Real-Time Threat Response in OT Remote Access

Why It Matters

Real‑time response narrows the window attackers have to exploit OT connections, boosting resilience for critical infrastructure and giving MSSPs a more proactive service model.

Key Takeaways

• Xona launches Active Defense for real‑time OT session response.
• Initial integration limited to Forescout; Nozomi, Dragos coming.
• Enforcement stays at remote access layer, preserving OT process continuity.
• MSPs can deliver instant containment, reducing log‑review latency.
• Vendor‑agnostic API planned to broaden detection source compatibility.

Pulse Analysis

Remote access has become the backbone of modern OT environments, allowing engineers to manage energy, water, and manufacturing assets from anywhere. While this connectivity improves efficiency, it also expands the attack surface, turning remote sessions into high‑value entry points. Traditional OT security relies on detection followed by manual response, often leaving a dangerous lag of minutes. As regulators like CISA highlight remote‑access pathways as prime targets, the industry is shifting toward solutions that can act at the moment a threat is identified.

Xona Systems’ Active Defense tackles this gap by coupling detection alerts directly to session‑level controls. When a suspicious signal arrives, the platform can instantly demand stronger authentication, restrict user privileges, suspend, or terminate the session. The approach deliberately limits enforcement to the remote‑access layer, ensuring that physical processes remain untouched—a critical safeguard in environments where a false positive could halt production. Currently, the system works with Forescout, with Nozomi and Dragos slated for integration, and Xona is developing a vendor‑agnostic API to ingest alerts from any OT detection tool, broadening its applicability across heterogeneous security stacks.

For managed‑service providers, this capability reshapes the security delivery model. Instead of post‑incident log analysis, MSPs can now offer real‑time containment, delivering a complete, actionable narrative of threat activity as it unfolds. This not only reduces response times but also creates new revenue streams centered on proactive defense rather than passive monitoring. As OT operators face mounting pressure to secure remote access, solutions like Xona’s Active Defense are poised to become a standard component of the critical‑infrastructure security toolkit.