Apple has declares the way to report an unwanted iMessage directly to the company to avoid the future incidents. A new Apple Knowledge Base article details steps that people can take to report spam iMessages, explaining that users can report the unwanted mesage to email@example.com by sending a screenshot of the message, along with the sender's email address or phone number, and the date and time that the message was received.
“To report unwanted iMessage messages to Apple, please send an email with the following details to: firstname.lastname@example.org
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.”
Some claim that Apple is planning to facilitate the process by adding a "report as spam" button to iMessage. Others claim that Apple intentionally added a bit of a barrier to curtail accidental or false reports. The company is rumored to come under for claims of iMessage encryption, and potential government spying through the NSA's PRISM program; it's in Apple's best interest to require people to exercise very explicitly consent when they share any communications with Apple. With the easy way to flag the unwanted message, the accusations of Apple accessing private communications may rise. So with the screenshot involved, Apple makes sure that users intentionally reveal their private texts.
There is great news coming along the iOS 7! Apple announced is the ability to block specific contacts, so if you receive an unwanted iMessage (or SMS or phone call), you will be able to immediately block any further messages from that phone number or email address. This makes the way better solution, doesn’t it? Do not hesitate to voice up in the comments below!