Blocked users can join the Dapp again using the same address as if they chose to delete their account. They should be blacklisted and prevented from registering again.
Consider this scenario:
A is blocked by the owner
A joins again by calling mintProfile(...)
again with the exact same params as before
A was obviously blocked for a good reason since the owner is trusted, A will keep on misbehaving on the Dapp
Manual Review
Implement a blacklisting mechanism to prevent blocked users from joining the Dapp again
Likelihood: Low, any blocked users. Impact: High, not really blocked.
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