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Legacy Systems

Cybersecurity statistics about legacy systems

Showing 1-11 of 11 results

31% of healthcare practices are still running on legacy systems that cannot contain a breach quickly once it starts.

Omega Systems6/28/2026
HealthcareBreach

23% of healthcare practices describe their technology as antiquated.

Omega Systems6/28/2026
TechnologyHealthcare

52% of global organizations cite legacy infrastructure as a primary blocker to security or AI deployment.

Zoho5/27/2026
Security ArchitectureAI Deployment

36% of financial services organisations and 36% of IT & technology organisations report modernising most or all core systems, compared with 12% of public sector organisations and 19% of industrial organisations

Telstra International & Economist Impact5/27/2026
ModernizationFinancial Services

Around 60% of US organisations, around 60% of UK organisations and 54% of German organisations say legacy technology still forms a significant part of their operations

Telstra International & Economist Impact5/27/2026
UKUS

28% of healthcare organizations operate medical devices past end-of-support.

RunSafe5/27/2026
Medical DevicesHealthcare

Legacy Windows operating systems are most prevalent in retail (39%), healthcare (35%), and financial services (29%).

Forescout5/27/2026
RetailHealthcare

34% of SMBs admit their cybersecurity technology is outdated.

VikingCloud5/27/2026
SMBs

75% of CISOs report their enterprises rely on extending controls originally designed for other attack surfaces to cover AI-driven workflows and infrastructure.

Pentera2/22/2026
AI SecurityUS

1 in 14 files, initially deemed 'safe' by legacy systems, were proven to be malicious

OPSWAT8/6/2025
MalwareLegacy systems

18.9% of API-related exploits involved legacy APIs, including AJAX backends and URL parameter-based systems.

Wallarm1/1/2025
APIExploits