Legacy Systems Are No Longer Just an IT Problem — They’re a Business Risk
TXOne Networks’ 2026 Annual OT Cybersecurity Report reveals a critical reality facing European industrial organisations: legacy systems have moved well beyond operational inconvenience. Based on research from over 550 senior OT and security decision-makers across six European countries, the report exposes how outdated infrastructure — particularly legacy Windows systems — is now a frontline security, operational, and business challenge.
The data is striking: half of Europe’s industrial organisations experienced a cyber incident linked to legacy systems in the past year alone, with malware and ransomware cited as top concerns. Yet replacing these systems remains out of reach for many, leaving organisations caught between rising security exposure and the risk of operational disruption.
The 2026 report offers a year-over-year comparison with 2025 findings and delivers actionable insight for business leaders, CISO/IT security teams, and OT/plant operations managers alike — helping each stakeholder understand the real costs, risks, and strategies being deployed right now. With 60% of organisations actively planning investment in dedicated legacy protection, the conversation has decisively shifted from “when to replace” to “how to protect today.”
Download the full report to benchmark your OT security strategy and discover what leading industrial organisations across Europe are doing next.
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