Look, Scratch already made a law of sorts which only allows chat interfaces with options to prevent this.
But, some people will see the cloud data, decode numeric messages, and see private conversations. To prevent this, detectors should be put which use cloud data and all to:
Crash the project
Add the username to some cloud data, so that the creator of the project is notified when someone tries to penetrate the security system.
I have implemented this strategy in the following project:
https://scratch.mit.edu/projects/1097068123
But, some people will see the cloud data, decode numeric messages, and see private conversations. To prevent this, detectors should be put which use cloud data and all to:
Crash the project
Add the username to some cloud data, so that the creator of the project is notified when someone tries to penetrate the security system.
I have implemented this strategy in the following project:
https://scratch.mit.edu/projects/1097068123