From Inherited Exposure to Managed Risk

Strategic Context

Legacy and end‑of‑life technology is increasingly becoming a governance and resilience challenge rather than simply a technical issue. As threats accelerate and infrastructure becomes more digitally dependent, organisations need clearer lifecycle governance, visibility and investment strategies to manage legacy risk while enabling secure modernisation. Leaders also face the challenge of modernising without disrupting essential services or operational continuity.

Key Discussion Points

• Legacy technology is now a strategic risk: unsupported systems across government and critical infrastructure are creating persistent exposure as the window between vulnerability discovery and exploitation continues to shrink.

• Lifecycle governance is the missing link:  many organisations have strong cyber frameworks but lack mechanisms that assign ownership, visibility and decision points for end‑of‑life technology.

• Operational technology (OT) environments are becoming increasingly exposed as legacy industrial systems converge with modern IT environments, increasing both cyber and operational risk.

• Inaction is not cost‑neutral: maintaining ageing systems consumes resources, increases operational risk and limits investment in modern security capabilities such as zero‑trust architectures and AI-enabled defence.

• Modernisation as strategic investment: structured technology refresh can improve resilience, unlock operational data, and position organisations to adopt emerging capabilities such as AI and post‑quantum security.

• Leadership decisions matter: boards and executives increasingly need clear frameworks to prioritise which systems must be replaced, which can be mitigated, and how to manage transition safely while maintaining operational continuity.