After seeing the headline and the photos, I kept expecting to read that it was some sort of composite "sketch" of suspects in the DDoS attack compiled from real photos. I am not familiar with what the members of Massive Attack look like and did not make that connection. Seems like poor photo usage.
They were trying to be clever. "Largest DDoS attack"..."Massive Attack". But I love Massive Attack but yes, most people wouldn't recognize the muscians and assume that it was the suspects behind the attacks.