Include a screenshot of the message you have received. Include the full email address or phone number you received the unwanted message from. Include the date and time that you received the message.

The attacks are accomplished by sending a quick succession of messages via iMessage. These messages, which are supposedly sent automatically from the OS X Messages app with the aid of an AppleScript, can arrive at such a high rate that they completely crash the recipient’s Messages app on OS X and even on iOS.