Cunjo said:the Windows Defender name now belongs to Microsoft.
Last I heard, Microsoft shut them down and took the name for their own product line.
EDIT: Yes, I am referring to a different "Windows Defender," which had been a good program at one point before Microsoft shut down the nonprofit developer with lawsuit threats over the name. I won't use Microsoft's version for the obvious reasons.
But the Windows Defender you are refering to also hasnt been updated in almost 10 years. I remember reading that article and even the guy who created it said that he didnt use that app anymore nor did he do anything with it for 10 years.
Yes M$ threatened with lawsuits but the guy would have givin up the Windows Defender name even if thye had just asked.
The best IMO is Windows Defender and Spybot.