For those of you on one of the 25 percent of workplace computers still running Windows XP, understand you're working on a system that's increasingly vulnerable to attack. This shouldn't be a surprise, however -- Microsoft has been clear about ending support for this operating system (OS) for a long, long time. 

There are so many issues surrounding this morning's announcement that it's almost impossible to count them. But Gartner has put together a list of 10 suggestions to mitigate the risks of continued use.

It's Over

Vista, Microsoft's follow up to XP , never really set the world on fire. Many Windows users were content with XP, and held onto it in the hope something better would come along. Unfortunately, Windows 7 didn't really have anything to recommend it. By the time Windows 8 came around, many users had begun turning to smart phones and tablets for their computing needs.

With that brief overview behind us, we can now move to Microsoft's long standing warning that as of April 8 -- today -- it will no longer be supporting Windows XP.

There are some, no doubt, that will point to today's Windows 8.1 upgrade as evidence that Microsoft is looking to push Windows 8 on its users. If Microsoft really cared about its customers, it would extend support of XP just a bit longer.

That, however, is not an argument that can really be sustained. Microsoft stopped selling the boxed edition of XP in 2008 and has been warning people for a very long time that support was coming to an end.

Even still, some users even suggested that the newly appointed CEO, Satya Nadella might offer users a "Happy Appointment" present by extending the life of XP. But why bother? It had to go. The world of computing has changed a lot since 2001, and XP is no longer a good option.

XP Security Issues

The end of support does not mean the end of life, though. And if you are still using it today, you probably won’t notice much difference. The last security update was issued this morning, but from here on in, you’re on your own.

As early as last August Tim Rains of Microsoft pointed out that sticking it out with XP could have potentially disastrous results. 

He said new vulnerabilities discovered in Windows XP after its “end of life” would not be addressed by future security updates from Microsoft. What this means is that hackers, who reverse engineer security updates for supported Windows systems, will try the same reverse engineering on XP with a reasonable chance of success.

In other words, if a flaw is found for Windows 7 or 8, there's a good chance a similar issue exists for XP as well. So when the fixes come out for Windows 7 or 8, hackers can go back to XP and look for an opening.

There are also performance issues. If you buy a new printer or scanner, it might not work on XP. Same goes for new software, which may require faster processors and more memory than was standard when XP was first released.

Paying For XP

The number of people that this will effect is potentially huge. According to a netmarketshare report from last month, 91 percent of the market uses Windows. Of that 91 percent, 27 percent is currently using XP.