A "repack" typically refers to compressed software or media files that have been modified or bundled by a third party. While popular in gaming communities, celebrity wallpaper repacks are a common vector for: Malware & Spyware
: Some files install unwanted toolbars or "adware" that bombards your browser with intrusive ads or redirects your homepage to suspicious sites. Crypto Miners
Ensure you have active protection from services like McAfee or Bitdefender to scan all downloads.