After bringing his collection to CryptoKitties.com, Bored Ape Yacht Club (BAYC) founder 'Neko_Bijin' noticed they were gone by the next day.

Nearly 10,000 CryptoKitties sold for around $320.00 each in October of last year. But after multiple reports of stolen funds, CryptoKitties owner Axiom Zen decided to upgrade the backend earlier this month.

Now when a user transfers their NFTs to CryptoKitties.com, they must wait until it processes 7 times before their assets are available in the digital cat collection game.

Many popular Ethereum games have implemented similar security measures in the past, but some users claim they're unnecessary and don't do enough to prevent theft.

Neko_Bijin and his fellow Bored Ape Yacht Club (BAYC) collectors feel that CryptoKitties.com is to blame for their missing assets.

"Allowing us to transfer our assets without waiting for the nodes to verify 7 blocks is negligence," said one BAYC collector in a tweet directed at CryptoKitties.

CryptoKitties co-founder and Axiom Zen CEO Roham Gharegozlou has yet to comment on this story. BAYC and other NFT collectors say they will not transfer their assets to CryptoKitties.com until the company implements better security measures to prevent future thefts.

As it stands, BAYC NFTs are estimated to be valued at around $300,000.

There's an ongoing investigation into this case; the stolen NFTs will be locked until further notice.

With many players reporting stolen assets in the past few weeks, this issue is unlikely to go away anytime soon.On February 6th 2019, ETHNews reported that the Bored Ape Yacht Club (BAYC) NFTs were still missing.