Microsoft Defender, Windows’ built-in antivirus tool, is widely considered robust enough to mean that an average user no longer needs a third-party antivirus or security suite. However, a bug brought to light by Twitter/X user yappy shows that there are times when Microsoft Defender can be extremely overzealous in its attempts to defend your computer.
A false positive can be observed when you type ‘This content is no longer available.’ or ‘This content is no longer available!’ in Notepad and save it as a text file on your PC. When you do so, Microsoft Defender will instantly flag it as a Trojan file and delete it from your system - no matter what file name you use, ostensibly protecting you from a potential 'severe threat.'
