This is a great idea! It's always a good idea to control carefully what information is available to a system you might not always be able to trust completely. I

This is a great idea! It's always a good idea to control carefully what information is available to a system you might not always be able to trust completely. It's especially important to be sure you're not leaking info through a channel you didn't consider, which at times means that an allowlisting approach is preferable to a blocklisting approach. Your heart is in the right place. Keep iterating!