
What Are Unsupported Operating Systems?
Unsupported operating systems are versions of software that no longer receive updates, security patches, or technical support from their developer—in this case, Microsoft. These include older Windows versions like Windows 7, Windows XP, and Windows Server 2003, among others.
While these operating systems may still function, they come with a hidden and potentially devastating cost: they are extremely vulnerable to cyber threats.
The Risks of Using Unsupported Operating Systems
1. No Security Updates
When Microsoft ends or ended support for an operating system, it no longer provides updates to fix vulnerabilities. Any security flaws discovered after support ends remain exposed, making these systems a prime target for hackers.
Imagine leaving your front door unlocked in a neighborhood where burglars know which houses are unlocked—that’s essentially what happens with unsupported OS’es. Cybercriminals actively seek out these unpatched systems, exploiting them for ransomware attacks, data breaches, and other malicious purposes.
2. Increased Cyber Attack Vulnerability
Unsupported operating systems lack modern security measures, making them vulnerable to both old and new threats:
- Known Exploits: Hackers can use publicly available information about these systems’ vulnerabilities to craft attacks.
- Zero-Day Threats: Even if a new vulnerability is discovered, it won’t be patched—leaving your systems exposed indefinitely.
3. Regulatory Non-Compliance
Many industries are governed by strict cybersecurity regulations, such as HIPAA, GDPR, GLBA or PCI DSS. These regulations require organizations such as ours to use up-to-date, supported software to safeguard sensitive data. Using outdated systems could result in hefty fines, legal liabilities, and reputational damage.
4. Operational Risks
Unsupported OS’es frequently experience compatibility issues with modern hardware and software. This can lead to system crashes, decreased productivity, and limited ability to deploy newer tools or security solutions. Moreover, if an incident occurs, you’ll find yourself without vendor support—leaving you to fend for yourself during a costly recovery process.
5. Network Vulnerabilities
Unsupported operating systems don’t just pose risks to themselves—they can compromise your entire network. If an attacker gains access through an outdated OS, they can pivot to other systems, spreading malware or stealing sensitive information.
Real-World Example: The WannaCry Ransomware Attack
The 2017 WannaCry ransomware attack offers a striking example of the dangers posed by unsupported systems. This global cyberattack exploited a vulnerability in Windows systems, encrypting data and demanding ransom payments. While Microsoft had released a patch for supported OSes, many organizations running unsupported systems like Windows XP were left defenseless. The attack caused billions of dollars in damages worldwide—an avoidable catastrophe for those who had upgraded their systems.
How to Eliminate the Risks
The good news? Eliminating unsupported operating systems from your environment is a straightforward way to mitigate these risks. Here’s how to get started:
- Inventory Your Systems: Identify all devices running unsupported OSes.
- Upgrade or Replace: Transition to supported operating systems that receive regular updates.
- Implement Strong Security Practices: Use modern security tools like firewalls, antivirus software, and multi-factor authentication to protect your updated systems.
- Educate Your Team: Train employees to recognize the risks of outdated technology and ensure compliance with security policies.
The Cost of Ignoring the Issue
Failing to address unsupported operating systems in your environment isn’t just a technical oversight—it’s a business liability. The risks include:
- Data Breaches: Loss or theft of sensitive information.
- Downtime: Operational disruptions due to malware or system failures.
- Reputational Damage: Loss of customer trust in the wake of a cybersecurity incident.
- Legal and Financial Consequences: Regulatory fines and costly incident recovery.
Protecting Your Business Starts Now
Unsupported operating systems may seem like a harmless legacy component of your IT environment, but they’re anything but. They’re a ticking time bomb, putting your data, network, and reputation at risk. The cost of upgrading is far less than the potential cost of a breach or attack.
By proactively removing unsupported OSes and implementing modern, secure alternatives, you can safeguard your organization from today’s evolving cyber threats.
Microsoft has ended support for the following operating systems:
Windows Vista: Support ended on April 11, 2017.
Windows 7: Support ended on January 14, 2020.
Windows 8: Support ended on January 12, 2016.
Windows 8.1: Support ended on January 10, 2023.
Windows 10 Mobile: Support ended on December 10, 2019.
Windows Phone 8.1: Support ended on July 11, 2017.
Windows Phone 8: Support ended on January 12, 2016.
Windows Server 2003: Support ended on July 14, 2015.
Windows Server 2008 and 2008 R2: Support ended on January 14, 2020.
Windows Server 2012 and 2012 R2: Support ended on October 10, 2023.
Windows Server 2016: Mainstream support ended on January 11, 2022; extended support continues until January 12, 2027.
Windows Server 2019: Mainstream support ended on January 9, 2024; extended support continues until January 9, 2029.
Microsoft does not typically provide updates after the official end of support for its operating systems. However, there are exceptions and additional programs for extended support under specific circumstances:
Apple has discontinued support for the following macOS versions:
- macOS 12 Monterey: Support ended on September 16, 2024.
- macOS 11 Big Sur: Support ended on September 26, 2023.
- macOS 10.15 Catalina: Support ended on September 12, 2022.
- macOS 10.14 Mojave: Support ended on October 25, 2021.
- macOS 10.13 High Sierra: Support ended on December 1, 2020.
- macOS 10.12 Sierra: Support ended on October 1, 2019.
- OS X 10.11 El Capitan: Support ended on December 1, 2018.
- OS X 10.10 Yosemite: Support ended on August 1, 2017.
- OS X 10.9 Mavericks: Support ended on December 1, 2016.
- OS X 10.8 Mountain Lion: Support ended on August 13, 2015.
- OS X 10.7 Lion: Support ended on October 4, 2012.
- Mac OS X 10.6 Snow Leopard: Support ended on July 25, 2011.
- Mac OS X 10.5 Leopard: Support ended on August 13, 2009.
- Mac OS X 10.4 Tiger: Support ended on November 14, 2007.
- Mac OS X 10.3 Panther: Support ended on April 15, 2005.
- Mac OS X 10.2 Jaguar: Support ended on October 3, 2003.
- Mac OS X 10.1 Puma: Support ended on June 6, 2002.
- Mac OS X 10.0 Cheetah: Support ended on June 22, 2001.
Apple typically provides security updates for the three most recent macOS versions. However, this practice is not consistently applied, and security fixes aren’t guaranteed for non-latest releases.
The following Android operating system versions are no longer supported:
- Android 11 “Red Velvet Cake”: Released in September 2020, support ended in February 2024.
- Android 10 “Queen Cake”: Released in September 2019, support ended in March 2023.
- Android 9 “Pie”: Released in August 2018, support ended in January 2022.
- Android 8.1 and 8.0 “Oreo”: Released in December and August 2017, respectively; support ended in January 2021.
- Android 7 “Nougat”: Released in August 2016, support ended in October 2019.
- Android 6 “Marshmallow”: Released in October 2015, support ended in August 2018.
- Android 5 “Lollipop”: Released in November 2014, support ended in March 2018.
- Android 4.4 “KitKat”: Released in October 2013, support ended in October 2017.
- Android 4.1 to 4.3 “Jelly Bean”: Released between July 2012 and July 2013, support ended in August 2021.
- Android 4.0 “Ice Cream Sandwich”: Released in October 2011, support ended in 2017.
- Android 3 “Honeycomb”: Released in February 2011, support has ended.
- Android 2.3 “Gingerbread”: Released in December 2010, support has ended.
- Android 2.2 “Froyo”: Released in May 2010, support has ended.
- Android 2.0 “Eclair”: Released in October 2009, support has ended.
- Android 1.6 “Donut”: Released in September 2009, support has ended.
- Android 1.5 “Cupcake”: Released in April 2009, support has ended.
- Android 1.1 “Petit Four”: Released in February 2009, support has ended.
- Android 1.0: Released in September 2008, support has ended.
Please note that support timelines can vary based on device manufacturers and carriers. It’s advisable to use devices running supported Android versions to ensure access to the latest features and security updates.
Apple has discontinued support for the following iOS versions:
iOS 8 and earlier: Devices running iOS 8 or below will lose access to iCloud backups after December 18, 2024. To use iCloud services, devices must operate on iOS 10 or newer.
iOS 12 and earlier: Applications like Sky Go have stopped supporting iOS 12 as of September 17, 2024, requiring users to upgrade to at least iOS 13 to continue using the service.
iOS 15 and earlier: Apple typically supports only the latest iOS release, with occasional security updates for older versions. However, devices running iOS 15 or earlier are generally considered unsupported.
iOS 16: With the release of iOS 18, support for iOS 16 has been discontinued.
It’s important to note that while some older devices may still function, they may not receive critical security updates, making them vulnerable to security risks. Users are encouraged to update their devices to the latest iOS version compatible with their hardware to ensure continued support and security.