Older versions of extraction tools like WinRAR have historically had Remote Code Execution (RCE) flaws, where simply opening a specially crafted .rar file could compromise a system.
Downloading "highly compressed" versions of operating systems like Windows 8 in .rar or .7z formats from third-party sites carries significant security risks. Official Windows ISO files are already optimized and typically do not require further extreme compression. Risks of "Highly Compressed" OS Downloads Download windows 8 32 bit highly compressed rar
Extreme compression can lead to corrupted files or "lite" versions that lack critical drivers and system components. Official & Safe Download Methods Older versions of extraction tools like WinRAR have