Why do I receive appleid code information?

I received the verification code message of AppleID because someone tried to log into the iCloud account of Apple's mobile phone. I received the verification code message of AppleID because someone tried to log into the iCloud account of Apple's mobile phone. It is strongly recommended to change the password immediately, because the account has the risk of disclosure and unsafe factors. These verification code messages were sent by Apple iCloud, and these operations were not carried out by myself. Please note that someone is trying to use the iCloud account associated with the received mobile phone number. Please protect the digital verification code contained in the SMS to avoid the risk of iCloud account theft and personal information disclosure.