NCSC Urges Organizations to Upgrade Microsoft Windows 11 to Defend Cyberattacks

The National Cyber Security Centre (NCSC) has issued a critical advisory urging organizations to prioritize upgrading to Windows 11 before the October 14, 2025 end-of-life deadline for Windows 10. This recommendation comes amid growing concerns the cybersecurity implications of maintaining legacy operating systems, particularly as cyber criminals increasingly target outdated infrastructure for exploitation. The urgency of this migration stems from the fundamentalsecurity risksassociated with unsupported operating systems. Historical precedents demonstrate the devastating consequences of delayed upgrades, including the 2017 WannaCry ransomware attack that exploited vulnerabilities in unpatched Windows XP systems, resulting in massive global disruption and financial losses. Similarly, Internet Explorer vulnerabilities were extensively exploited after Windows XP support ended, highlighting the critical window of vulnerability that emerges when systems transition to legacy status. NCSC res...