: Many backup files are encrypted. If prompted for a password you don't know, it may be part of a protected data set or a phishing attempt.

: Verify where the file originated. If it is from an unknown source, do not open it.

: Use a tool like WinRAR or 7-Zip to "Open Archive" rather than "Extract." This allows you to see the list of internal filenames without running them.

"backup-june-july.rar" does not appear to be a widely known public file, software package, or documented data leak. Based on the name, it is a likely containing personal or professional backup data from a June–July period .

: Often used to store photos, videos, or project work from those specific months.