. I wonder if my author page is hacked.

Dear Goodreads Team.
The same five people rated all my books one star, while of most them have five star ratings and reviews by Goodreads authors. The five people gave one star to all my books at the same time and all of them were the same people without profile pictures. It is obvious they have not read any of my books. I wonder if my author page is hacked.
Best wishes,
Anahit.