Nothing wrong with continuing to use XP, if it's fully patched, with appropriate anti-virus and anti malware tools (e.g Malwarebytes) and all add-ons such as Flash are up to date. Long as you're not in the habit of clicking on unchecked links, replying to Nigerian generals or browsing dodgy sites (e.g. warez) that is....but no operating system is proof against the wetware using it!