A $35 million lesson, with this message "Well, This was fun, had no intention of actually exploiting this lol. Otherwise I wouldn't have used Coinbase. Once you guys publicly acknowledge that the explosion exists, I will remove the block immediately : USE

-A Crypto community led by former pro baseball player Micah Johnson raised about $35 million with an NFT launch.Shortly after, it announced that it had lost of the money

-Johnson has spent the past year promoting a brand called Akuverse.On Friday, it planned to drop Akutars, the official NFT avatars of Te Aku universe. Prices would start high, at 3.5 ETH, but were set to descend as the sale progressed

-All the code of for the NFT launch mechanism was already public in smart contracts deployed to the Ethereum Blockchain, anyone with an internet connection could take a peek at the NFT's inner workings.

An hour or so after the sale began, someone was able to use that foreknowledge to exploit the Akutars smart contact.

The exploiter even left a message in the malicious transaction :

"Well, this was fun, had no intention of actually exploiting this lol. Otherwise I wouldn't have used Coinbase. Once you guys publicly acknowledge that the exploit exists, I will remove the block immediately : USER221"

Source : https://www.coindesk.com/layer2/2022/04/25/the-pitfalls-of-community-as-company/