The impending end-of-life (EOL) for operating systems like Windows 10 creates an immediate and permanent security vulnerability, essentially transforming these unpatched systems into prime targets for sophisticated cyber threats and ransomware attacks. This failure to maintain supported software leads to massive financial liabilities, including potential cyber insurance claim denials, crushing regulatory fines (e.g., for HIPAA or PCI DSS violations), and the revocation of essential federal permissions like Authorization to Operate (ATO) status. We break down the necessary strategic risk responses, detailing how organizations must urgently conduct asset inventory and formal risk assessments (Task P-3, P-14) to either migrate systems or implement costly but necessary compensating controls, such as network segmentation, before the October 2025 deadline.

https://www.securitycareers.help/the-windows-10-end-of-life-countdown-just-6-days-remain-until-critical-security-support-ends

https://www.compliancehub.wiki/the-compliance-minefield-how-end-of-life-systems-put-organizations-at-legal-and-financial-risk

https://endoflife.date

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