currently I am one of the assistant bounty managers, currently there are many cheaters who follow the campaign that we are managing and what we find that the cheaters are starting to act again with multiple accounts by creating a new bitcointalk account to join the bounty then using other people's social media link profiles
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As long as there are bounties, so many cheater accounts are used to increase their share in the campaign. Here is one of the latest cases of the "JACS.tech" bounty, in which a participant has the same problem as you described:
https://bitcointalk.org/index.php?topic=5282485.0 Those members who participate in the bounty, they can track that their account is being used by others. But those who do not participate in the bounty will not be able to constantly track all the spreadsheets to find their data in them.