Account banned - Haven't signed on in months.

I tried to sign on today and noticed my account was banned. The last time I played was sometime around July 2015. I heard there was new content coming out and wanted to return. I can assist with any information needed to help figure out what happened. A friend still playing was telling me there was a wave of hackers at some point since then.
Zoomkins
60 Druid
Horde
Nostalrius PvP
Zoomkins
60 Druid
Horde
Nostalrius PvP