Hello,
It seems that Bitdefender Internet Security prevents the installation of the official VS code extension for PowerShell (PowerShell/vscode-powershell: Provides PowerShell language and debugging support for Visual Studio Code (github.com))
I have already created a github issue on their side, where all the details and repro steps can be found: Bitdefender Internet Security prevents to install the VS code extension properly · Issue #4561 · PowerShell/vscode-powershell (github.com)
My feeling about this is that this is a false positive from Bitdefender Internet Security.