An advertisement suddenly appeared in the calendar, reminding me that this is a virus?

The information received by IOS and MacOS devices is pushed by Apple iMessage. They were originally used to add friends to keep in touch with each other, but for some reason, they were used by criminals. They can fill in the text at the account invitation and push advertisements to the AppleID of ordinary users. If users synchronize the iPhone system calendar with the iCloud calendar, they may receive a prompt in the iPhone and display the spam preset by the criminals. On the connected iOS or Mac (such as the iPad or MacBook using the same account),

In operating system devices, the same message will also appear. In the latest version of Tencent Mobile Manager, calendar advertisements have been cleaned up. You can swipe up to advanced features in the phone manager, and then select "calendar advertisement cleaning" to clean up.