Bk.7z -

Move backup files to a private folder outside the web root or on an external server.

To access the contents of a bk.7z file, you need archival software. Move backup files to a private folder outside

It allows you to password-protect sensitive data. Common Contents of bk.7z Move backup files to a private folder outside

What you are using (Windows, macOS, Linux)? If you are trying to restore it or just open it? Move backup files to a private folder outside