: Users sometimes use random strings to obfuscate the contents of an archive, especially when paired with a password.

The randomized nature of the filename "YJDKHJSH" often signals one of three things:

: The format can theoretically handle archives up to 16 billion gigabytes (GB) in size. Investigating "YJDKHJSH"

: 7z is an open format, meaning it can support virtually any new compression or encryption method.

Because .7z is not natively supported by all operating systems, you typically need a third-party utility to access the contents.