NFT collector suffers wallet compromise and loses over 100 NFTs, priced at over $600,000

A computer-generated image of blue and orange wave-like structures on a striated yellow and orange backgroundOne of Casper's stolen NFTs, Jiometory No Compute - ジオメトリ ハ ケイサンサレマセン #1021 (attribution)
NFT collector "Casper" discovered their wallet had been compromised, and an attacker had stolen around 114 NFTs worth around $600,000. The collector took to Twitter to urge people not to transact with his compromised wallet, and to ask OpenSea and other marketplaces to freeze the address. As of April 12, it was unclear how the wallet had been compromised. However, other wallets besides Casper's had transferred NFTs to the same exploiter address, so they may not have been the only user affected.