Nov-13–2021
Although the CryptoPhunks collection had been delisted from OpenSea, a back door exploit allowed people to buy Phunks for the last price they were listed for.
Many Phunks were stolen for a small fraction of the floor price at the time.
OpenSea's response was to minimize and bury the existence of the exploit, and offer those affected hush money.
This exploit still exists today.
OpenSea has done nothing to fix it.