Amazon is extremely spammed by the people for the sake of free products or affiliated income. There are lots of news published about the Amazon Kindle platform was spammed for adding fake reads to the books.

Amazon Kindle platform is basically a golden opportunity for the book publishers and once they enroll his/her book to amazon kindle unlimited program, they'll earn from every page read by the people.

Most of the people misused the platform by reading the books from multiple Amazon accounts and they get the income every month smoothly until they were caught by the Amazon.

This was just a part of 100s of scams on Amazon. Sometimes malwares injects codes on the browser to show affiliated Amazon links. 

According to Uninstall Guide, my safe savings app was shaving people by showing ads on their browser. This was basically a malware and its still in business.