A few BAYC holders had a bad week because some Bored Ape NFTs were sold for less than 7 ETH and all because of an OpenSea bug.
This glitch allowed digital thieves to use previous listings to sell NFTs with big discounts. Because of this multiple BAYC digital assets were listed on the secondary marketplace. The cheapest one sold for 0.77 ETH, way below the collection’s 88 ETH floor price. Now the collectors are trying to answer a simple question: Whose fault this is?
How can a Bored Ape NFT be sold for 0.77 ETH without owner consent?

Bored Ape #9991 NFT featuring a rare Laurel trait sold for 0.77 ETH via OpenSea. The owner @TBaller was very angry and scared when he saw that it was all gone. He asked Twitter for advice and then found out about the OpenSea glitch.
The glitch happens because when an NFT owner wants to delist his NFT but doesn’t want to pay some gas chooses to transfer the NFT from one ETH address to another. This step automatically de-lists the digital asset from the marketplace – but there’s a catch.

The offer will no longer be on OpenSea but will still be valid via the marketplace’s database. This means that the listing, which includes your signed message approving that you’re ready to sell your NFT, is still there.
So the digital thieves can use old NFT listings that weren’t properly de-listed to purchase digital assets very cheaply.
The glitch is not something new but OpenSea didn’t make any statements regarding the massive Bored Ape NFTs theft.
One more interesting fact is that the thief was very generous sending 20 ETH back to TBaller hours after stealing his Bored Ape NFT.