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[Edited by Yyttyu on Mar 26, 2020]

This seems like a question for Reddit. Try r/OpSec

You think way too high of yourself if you think any university is going to spend resources to track you down and ban you.

No one cares about you or any other trolls...

Visas might be different. Governments have different resources and civil servants can be capricious.

Most people won't care but some counties have both resources and unfair officials.