The coins are still in my wallet, but someone changed it to multisig: is this theft or fraud?

Hey, what do you all think I should do about this? The coins are still in my wallet, but when I checked, I found it had been changed to multisig. Is this theft or fraud? 😨 I just read an article saying this is pretty complicated and needs some careful research. #数字货币钱包 #MultisigIssue