Between 2025 and 2026, threats to business-critical systems are intensifying, from targeted intrusions and extortion to supply-chain attacks via vendors. AI is used both as a tool and as an attack surface, and the convergence of IT and OT is causing real operational disruptions. The conclusion is clear: security must be built in from the start, designed to last, with traceability, governance, and the ability to recover quickly.
Adapt to the 2026 threat landscape
Ransomware continues to grow, disproportionately affecting smaller organizations that often lack resilience. State-sponsored campaigns operate long-term within infrastructure, while hacktivism seeks attention and tests boundaries in industrial environments. Supply chains remain weak links, even within security products that many organizations trust.
At the same time, regulatory pressure is increasing through NIS2, DORA, and the CRA, with clear expectations around security by design, lifecycle accountability, and transparent component inventories. To cope, organizations need risk-based prioritization, redundancy in vulnerability intelligence sources, and an assumption that breaches will eventually occur.
Build security into the architecture
Start with design. Perform threat modeling early, put identity first, and apply least privilege with fine-grained segmentation. Plan for detection, containment, and recovery as part of normal operations.
Secure the supply chain using SBOMs and CSAF, signed and verifiable artifacts, reproducible builds, and continuous monitoring for known exploited vulnerabilities. Treat security products themselves as high-risk assets, with strict patch requirements and independent verification.
In operations, this requires EDR with noise reduction, threat hunting, regular exercises, and metrics that focus on time to recovery and real-world impact.
Develop AI and OT with control
Build AI with protected data pipelines, isolated agents, defenses against prompt injection, and full traceability. Introduce human-in-the-loop approval for high-risk actions.
In OT environments, focus on asset inventory, segmentation, and passive monitoring; hardening of control systems; controlled remote access; and separate maintenance workflows. Prepare for post-quantum security by inventorying cryptographic dependencies and beginning hybrid migrations where data must remain protected long-term.
When security is embedded in architecture, governance, and daily operations, both risk and recovery time are reduced. That is how we protect organizations and critical societal functions over time: by building correctly from the start, following up consistently, and taking responsibility for the entire lifecycle.