https://en.wikipedia.org/wiki/Private_Use_Areas
I came across a Python library that passed the ASCII range into one of these non printable character ranges and then into a database. If someone was doing that manually with a hex table, how is that detected and mitigated?
No one reads hex as strings IRL.
But it means nothing. You can cypher in much more efficient or clever ways.
Unrelated to the question or circumstance