There is more than one artist with this name:

1) Rat Attack is former Ratt singer Stephen Pearcy re-recording songs he performed with Ratt (and previous incarnation Mickey Ratt). Due to his not having the legal rights to use the name Ratt, he performed the songs under this artist name. Former L.A. Guns guitarist Tracii Guns and former Dokken guitarist George Lynch are among those who perform as guests on the sole album.

Read more about Rat Attack on Last.fm.