According to community user @ZachXBT, seven BAYCs worth more than $700,000 (about 540 ETH) have been stolen, namely BAYC 4317, 755, 6567, 8761, 2951, 9611, 8274.
Victims appear to have been tricked into approving a malicious contract that resulted in the theft of BAYC in their wallets, where BAYC #6567 was purchased for 190 ETH, but has now been resold for a low price of 63 ETH.
@ZachXBT said that the hacker who carried out this attack may be a repeat offender, because this person (or team) also stole another BAYC 8941 in September, and he also revealed that the hacker has now washed the obtained from this attack through FixedFloat 210 ETH.