This is what people usually mean by “PS4 PKG download work” – they’re asking if unofficial PKG files can be installed.
In a debug or development environment (a kit used by game developers), PKG files are installed manually to test games before release. In a homebrew environment (jailbroken retail consoles), PKG files are repurposed to run unofficial software and backup games. ps4 pkg download work
PKG files are executables. While the PS4 operating system is sandboxed, exploits can break those barriers. There have been proof-of-concept ransomware PKGs that encrypt the user’s game saves and demand payment. Even more common are PKGs that install spyware to steal PSN credentials or network tokens. This is what people usually mean by “PS4