Gartner Explains the Shift from Prevention to Resilience

For many years, prevention has been the focus within OT cybersecurity.  This approach is best compared to a fortress – building higher walls and deeper moats with a single, binary goal: keeping the bad actors out. But the landscape of 2026 has made a zero-breach scenario an unrealistic goal. 

As nation-state actors grow more sophisticated and AI-driven attacks lower the barrier to entry for complex exploits, a different approach is needed. We are moving from a mindset of if we are breached to a reality of when a disruption occurs. This is in turn changing the CISO’s role from prevention to a champion of cyber resilience.

The Myth of Total Prevention

Gartner’s recent research, Predicts 2026: Cybersecurity Program Rebrands to Cyber Resilience, provides context to this shift. According to the report, cybersecurity leaders must immediately realign their strategies to “prioritize limiting business harm, minimizing operational impact, and ensuring continuity rather than pursuing the unattainable goal of total prevention.”

Why is total prevention unattainable?

1. Symmetry of AI: While defenders use AI to detect threats, attackers use it to automate the discovery of vulnerabilities and run hyper-realistic phishing campaigns at scale.
2. Geopolitical Volatility: Nation-state actors are targeting the operational continuity of critical infrastructure.
3. The Complexity Gap: The sheer breadth of modern digital assets makes it impossible to secure every endpoint with equal vigor.

Operational Continuity: Protecting the “Crown Jewels”

If an incident is inevitable, the focus must shift to asset and process protection. You cannot protect everything at 100% capacity. Resilience requires prioritization in identifying the core processes that keep the business solvent.

Furthermore, there are regulatory and financial risks for failure to pivot to resilience. Gartner warns that “failure to act will expose organizations to regulatory penalties, increased recovery costs, and prolonged business disruptions.” As a result, an increasingly important part of CISO’s role is Disaster Recovery. By 2028, Gartner predicts that 50% of CISOs will own this function, reflecting an organizational need for a unified response to any disruption, whether it’s a ransomware attack or a technical failure.

Growing Importance of Process Oriented OT Cyber

The shift from a fortress mentality to one of Cyber Resilience requires a fundamental change in where we look for threats. If we accept that the “walls and moats” of the network perimeter will eventually be breached, the final line of defense is no longer the network. It is the process itself.  SIGA’s Process-Oriented OT Cyber solution suite aligns with Gartner’s perspective by focusing on the “Crown Jewels” of any industrial organization: the physical integrity of the operation and the continuous handling of potential malicious breaches to ensure full containment.

In the high-stakes reality of a breach a significant threat to resilience is uncertainty. When a network is compromised, a CISO can no longer trust the HMI data.  This is because of the risk that HMI dashboards are compromised and may show normal operations while the physical process is being manipulated or destroyed. 

Resilience requires understanding the evolving, complex picture to derive the right prioritized actions based on changing malicious probability.

SIGA provides the critical Out-of-Band visibility required to navigate this crisis:

• Real-Time Discrepancy Detection: SIGA monitors raw electrical signals directly from Level 0 sensors. By comparing this physical “source of truth” to the reported digital data, CISOs can immediately identify discrepancies between what the control system says is happening and what is actually happening at the industrial facility.
• Precision in the Fog of War: Rather than a blind, total plant shutdown allows for surgical Incident Response. It identifies exactly which specific assets are behaving abnormally, allowing the organization to maintain continuity for the rest of the operation.
• The Foundation of Recovery: Cyber resilience is measured by the ability to recover. SIGA provides an unhackable forensic trail of physical behavior, giving CISOs the data they need to verify that a process is safe to restart.

By shifting the focus from the network to the process, SIGA ensures that even when the fortress falls, the CISO maintains the visibility and control necessary to protect the business’s core assets and ensure long-term operational resilience.