> Also why is the rar-archive "protected" with a passphrase
Many AV suites recognize common and innocuous things in code as viruses (e.g. compression, heavily used in demoscene production). Putting a password on prevents the AV from scanning the file and blocking it outright.
Once I made the mistake of using demo-related tools to craft my own gamedev tools and engines... (for example using kkrunchy to pack my stuff).
One day I decided to isntall anti-virus and... whoooops, everything was nuked (the AV deleted without asking permission, didn't even bothered with quarantine).
Many AV suites recognize common and innocuous things in code as viruses (e.g. compression, heavily used in demoscene production). Putting a password on prevents the AV from scanning the file and blocking it outright.