Is Windows 11 Real?

Good question, it is not only for this leaked version but what I am going to mention is applicable for any other pirate version of Windows. They modify the system and add malware and they could edit it in a way so Windows Defender ignore the malware or some sort of add it to the exception as the hidden. The genuine version of Windows has been fully checked and verified by Microsoft and privacy authorities of countries would check it too. However, for the fake and unofficial version no one bear responsibilities and I even saw a pirate version of Windows 10 when fully updated version of the Windows Defender failed to detect a well known malware which is being detected by a genuine version. Sometimes, they harm the core malware engine so even if you install other Anti-Malware, it won't work. The only way to detect such a malware is using offline scanner and also doing some manual checking on the system.