On October 8, 2021, anon Gabagool was researching the $RBN airdrop when he discovered something fishy: a set of wallets that had all farmed the airdrop using .1 ETH, selling their RBN tokens on the first day they were able to, and sending the resulting ETH profits to the same wallet. After poking around a little bit more, Gabagool realized that this wallet belonged to a user with the ens name "bridget.eth," which was associated with an employee at Divergent Ventures, a VC firm and early Ribbon Finance investor. This smelled suspiciously like an insider-information fueled sybil attack on the Ribbon airdrop to Gabagool, who tweeted about his finding, setting off a sequence of events that would eventually result in Divergence Ventures returning over $15 million in ETH to the Ribbon DAO, and sparking a crypto community-wide discussion about the ethics of airdrop farming. This HASH was made using the transaction hash from the first ETH transfer made out of the sybil attacker's many wallets to the bridget.eth wallet after she sold RBN tokens from one of the airdrops for ETH.

The Coinblock's Article about these events.