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Legacy Operating Systems in Enterprise Networks

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1 unique sources, 1 articles

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A recent analysis by runZero found that 8.56% of assets in enterprise networks are running end-of-life operating systems, with 5% of all observed assets already beyond security support as of September 30, 2025. This includes critical systems that cannot be upgraded due to compatibility issues. The upcoming end-of-life of Windows 10 on October 14, 2025, will significantly expand the attack surface, as one-third of all Windows systems worldwide are still running Windows 10. This situation poses a significant risk, as attackers can exploit vulnerabilities in these outdated systems, which will no longer receive security updates. Organizations need to be aware of the presence of these legacy systems and assess their security posture accordingly.

Timeline

  1. 01.10.2025 16:59 1 articles · 9h ago

    Windows 10 End-of-Life to Significantly Expand Attack Surface

    Windows 10 will reach end-of-life on October 14, 2025, affecting one-third of all Windows systems worldwide. This will significantly expand the attack surface, as these systems will no longer receive security updates. Organizations need to be aware of the presence of these legacy systems and assess their security posture accordingly.

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