Microsoft officially ended support for Windows XP on April 8, 2014. This cessation meant:
As Microsoft ended support in 2014, a standard XP installation is critically vulnerable to modern malware. If you plan to connect it to the internet, you must take precautions: windows xp professional 32bit iso top
If you have a Visual Studio or MSDN subscription, Microsoft still hosts legacy ISOs. This is the only truly legal source. Microsoft officially ended support for Windows XP on