Forum Curses Entr'acte: Who Am I?

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Not too sure about that, hope randomness didn’t want us to try brute forcing it :>

@Randomness

This cipher may have taken hours for someone to crack if they weren’t aware of how it worked, however now computers can defeat it in seconds, and even a person without a computer would be able to work it out quite easily.

There was this sentence but it is kinda vague and part of the explaination