As of October 14, 2025, Microsoft will officially end support for Windows 10. This means that Windows 10 will no longer receive security updates, feature updates, or technical support from Microsoft. While your Windows 10 devices will continue to function, the lack of updates poses significant security risks and operational challenges. As of July 2024, Windows 10 holds a market share of around 65%, making it the most popular Windows desktop operating system, compared to Windows 11's 31%. We will explore the potential consequences of this change, the associated security risks, and provides suggestions for transitioning to newer versions of Windows for both businesses and individuals.
Potential Consequences of End of Support
Increased Vulnerability to Cyber Attacks: Without regular security updates, Windows 10 systems will become increasingly vulnerable to new and evolving cyber threats. Hackers often target unsupported software, knowing that vulnerabilities will remain unpatched. This significantly increases the risk of malware infections, data breaches, and ransomware attacks.
Compliance Issues: Many industries in Australia have regulatory requirements that mandate the use of supported and secure software. Continuing to use Windows 10 after support ends could result in non-compliance with these regulations, potentially leading to fines and legal issues.
Operational Inefficiencies: As software vendors update their applications to be compatible with newer operating systems, older systems like Windows 10 may face compatibility issues. This can lead to operational inefficiencies, increased maintenance costs, and difficulties in integrating with modern business tools.
Associated Security Risks
Unpatched Vulnerabilities: The most significant risk is the presence of unpatched vulnerabilities. Without security updates, any new vulnerabilities discovered in Windows 10 will remain unaddressed, providing an open door for attackers to exploit and compromise systems.
Malware and Ransomware: Unsupported operating systems are prime targets for malware and ransomware attacks. These attacks can lead to data breaches, financial loss, and significant downtime for businesses and individuals.
Phishing Attacks: As security measures become outdated, phishing attacks may become more effective. Users may be tricked into downloading malicious software or revealing sensitive information, potentially leading to identity theft and financial fraud.
Managing Security Risks at Different Levels
1. Organisational Level:
Risk Assessment: Conduct a thorough risk assessment to understand the potential impact of continuing to use Windows 10. Identify critical systems and data that may be at risk.
Policy Development: Develop and enforce policies that mandate the use of supported software. Ensure that all departments are aware of the end-of-support timeline and the associated risks.
Training and Awareness: Provide training to employees on the risks of using unsupported software and best practices for maintaining security. This includes identifying and avoiding phishing attempts, recognising suspicious emails, and practicing good password hygiene.
2. IT Department Level:
Patch Management: Ensure that all systems are up to date with the latest patches before the end-of-support date. Consider using third-party security solutions to provide additional protection.
Network Segmentation: Segment networks to isolate systems running Windows 10 from critical infrastructure. This can help contain potential breaches and limit the impact of an attack.
Incident Response Plan: Develop and test an incident response plan to quickly address any security incidents that may arise from using unsupported software.
3. Individual Level:
Personal Devices: For individuals using Windows 10 on personal devices, it is crucial to upgrade to a supported version of Windows to ensure continued security.
Backup Data: Regularly back up important data to prevent loss in case of a security incident or system failure.
Use Security Software: Install and maintain reputable security software, such as antivirus and antimalware programs, to provide an additional layer of protection.
Suggestions for Transitioning to Newer Versions
1. For Businesses:
Upgrade to Windows 11: Evaluate the compatibility of your hardware and software with Windows 11. Plan and execute a phased upgrade to minimise disruption to business operations.
Invest in New Hardware: If existing hardware is not compatible with Windows 11, consider investing in new devices that meet the system requirements.
Leverage Cloud Solutions: Consider moving to cloud-based solutions that offer enhanced security, scalability, and reduced reliance on specific operating systems.
2. For Individuals:
Check Compatibility: Use the PC Health Check tool provided by Microsoft to determine if your device is compatible with Windows 11.
Upgrade Process: Follow the upgrade process through Windows Update or consider purchasing a new device with Windows 11 pre-installed if your current device is not compatible.
Stay Informed: Keep informed about the latest security practices and updates to ensure your personal devices remain secure.
For those who need more time to transition, Microsoft offers the Extended Security Updates (ESU) program. This program provides critical security updates for Windows 10 devices for up to three years after the end of support date. The cost for ESU for businesses starts at $98 AUD per device for the first year and doubles each subsequent year. And for consumers will be $48 per year for a single year of ESU.
Deciding whether to invest in ESU should be based on a cost-benefit analysis. Consider the following factors:
Cost of ESU vs. Cost of Upgrading: Compare the annual cost of ESU with the one-time cost of upgrading to Windows 11 or purchasing new hardware.
Risk Tolerance: Assess your organisation's tolerance for risk. If the potential impact of a security breach is high, investing in ESU may be justified.
Operational Impact: Consider the operational impact of transitioning to a new operating system. If the transition can be managed smoothly, it may be more cost-effective to upgrade rather than pay for ESU.
Ultimately, the decision should align with your organisation's overall IT strategy and risk management framework.
How Can Spartans Security Help?
At Spartans Security, we are your trusted partner in bolstering your organisation’s security compliance. Our team can facilitate the transition to newer versions of Windows by performing system assessments, aiding in upgrades, and offering continuous security support. For organisations opting to continue with Windows 10, we provide risk assessments for the Extended Security Updates (ESU) program, implement enhanced security measures through compensating controls, conduct regular audits and security reviews, and develop incident response plans to mitigate risks.
Conclusion
The end of support for Windows 10 marks a significant milestone that requires careful planning and action. The associated security risks of continuing to use an unsupported operating system are substantial and can have significant impacts on businesses and individuals. By understanding these risks and taking proactive steps to transition to newer versions of Windows, organisations and individuals can ensure continued security, compliance, and access to the latest features and performance improvements. Upgrading to Windows 11 not only mitigates these risks but also provides access to enhanced features and improved performance, making it a worthwhile investment for the future.
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