Despite being abandoned by Microsoft over three years ago, Windows XP is still the world's third-most popular operating system. According to the latest statistics, it is still installed on 7.04 percent of computers around the world, eclipsed only by Windows 7 and Windows 10.

Windows XP is considered one of Microsoft's greatest operating systems. It was exceptionally well-received when it made its debut more than 15 years ago with a much-improved user interface, greater networking and internet features, and major advancements under-the-hood. In 2017, it's still the preferred operating system for millions of PC users.

Figures from Net Applications show that Windows XP holds a 7.04 percent share of the worldwide operating system market, behind Windows 10 with a 26.28 percent share, and Windows 7 with a 48.5 percent share. It's more popular than Windows 8.1 with its 6.96 percent share, and even macOS, which accounts for just 3.21 percent of the market.

But despite how good Windows XP was, it's not a good idea to be using it today. Not only is it no longer supported by most developers, but it isn't even supported by Microsoft anymore, which means it doesn't get software updates or security patches. This leaves the platform vulnerable to new attacks that take advantage of holes that still remain.

In fact, it's thanks to those holes that hackers were able to launch a global cyberattack last week, leaving businesses and organizations in 99 countries locked down by ransomware that encrypts their data and refuses to unlock it until a hefty fee has been paid. The attack is still causing havoc in many countries, including the U.K., where it has impacted the National Health Service (NHS).

In recent years, Microsoft has been pleading with business and consumers to update to more recent versions of Windows, and even made Windows 10 free for the first year to encourage upgrades. But Windows XP just won't die, with around 140 million people still using it every day.