Russian hackers are busy with Pentagon, not with musical sites
Hackers don't care who they hit. They come from all walks of life and each one has his own agenda.
Some are political, some are religious, some just want money. It's all fun and games to them and they really don't care who they take down. It's just another notch on their gunbelt.
For the victim it can be anything from a bloody nuisance to a paralyzing hit on their livelihood.
The worst ones hide behind international borders with no extradition.
Personally I blame Micro$haft for pumping up their flawed OS and using it for critical services worldwide.