New iMessage spam tactics

It looks there is new iMessage spam tactics which evades the existing whatever spam filter. I have been receiving such spam for a few weeks now.

Basically the spammer would create a group with 3 people, including me. Then spam message is sent to the group. It appears apple does not filter such conversation, and there is not even a “Report Junk” link in the message.

Is apple aware of the problem and going to address this soon? It looks spammer is always gaining some upper hand by exploiting some holes in the iMessage platform, and I wonder how apple is going to keep up with it. So far, apple does not seem to be very good at fighting spam based on my experience.