Powershell to find all files in a folder NOT password-protected ZIP and delete them

I found this one - > https://superuser.com/questions/1150631/powershell-script-to-test-zip-passwords-from-file - > but it looks like what I need is a little different.

Is it possible to find all files in a folder which are NOT protected by a password and delete them?

Trying to solve the problem of people putting all kinds of sensitive files where these files shouldn't be.

You can try the following:

Get-ChildItem -Filter *.zip |
  Where-Object { '' | 7z t $_.FullName *>$null; $LASTEXITCODE -eq 0 } |
  Remove-Item -WhatIf

^{Note: The -WhatIf common parameter in the command above previews the operation. Remove -WhatIf once you're sure the operation will do what you want.}

• The above uses 7z's t command to verify archive integrity.

• Password-protected archives trigger a password prompt, which the pipeline input - the empty string ('' | ...) - provides a response to, causing the integrity verification to fail due to an invalid password, which 7z reports via a nonzero exit code, reflected in PowerShell's automatic $LASTEXITCODE variable.

• $LASTEXITCODE -eq 0 therefore returns $true only for archives that pass the integrity test, which are archives without password protection (7z then ignores the unneeded pipeline input).