WinRAR users have been targeted by several critical vulnerabilities recently, making it dangerous to use unverified versions:

Let me know which legitimate angle works for you, and I’ll write a full, safe, and useful blog post.

Files like Winrar.5.xx-patch.zip or WinRAR 64bit Universal Patch.exe are frequently identified by security researchers as malicious.

If you are looking for the actual features introduced in the WinRAR 5 series (the format), here are the highlights: 1. Improved Compression (RAR5 Format)