Amazon marketplace seller accounts are the subject of increased hacking attempts. From what we understand, this involves the changing bank account settings and discounting of pricing to liquidate inventory.
Here are a couple articles to help you better understand the nature of the scheme:
A quick Google search makes it evident that this has been happening for years. It's important for sellers like you to protect themselves.
If you have not done so already, please take a few minutes to update your password and implement 2-step authentication on your Seller Central account:
We recommend taking security of your selling account seriously and we're here to help if you have any questions.
Learn more best practices on our Knowledge Base at faq.zentail.com