Yes, there are trust levels associated with running untrusted code, and processing untrusted data.  It&#x27;s <i>possible</i> (but often hard and annoying) to access some external&#x2F;untrusted resources such as the internet and items on them without running untrusted code, it is not possible to do so without processing untrusted data (at a minimum it&#x27;s going to traverse your network stack and display&#x2F;disk drivers).