Amazon and Google are being examined in many bogus reviews on their respective websites by the United Kingdom Competition and Markets Authority (CMA).
The CMA has said that both websites do not make the detection and removal of fraudulent product reviews and will investigate the violation of consumer law by not protecting the customers of both companies.
Amazon is also microscopically aware of whether its users have altered product lists through good feedback from other product sites and utilizing them according to the CMA as their own.
The announcement follows the CMA's agreement on the same issue of not doing enough to detect and delete fraudulent reviews by Facebook and its subsidiary Instagram.
Facebook countered by promising to prohibit users from creating new profiles frequently to publish fraudulent reviews.
"We're concerned that thousands of online shoppers could be misled by reading bogus reviews and then expending their money on these suggestions," stated Andrea Coscelli, Chief Executive Officer of CMA.
"It's simply not fair, too, if certain companies can counterfeit 5-star evaluations to give their products or services the visibility they deserve while legal firms lose out."
The CMA stated that the two companies have not yet established if they have breached the law.
Amazon said in a statement, "We spend a lot of money to prevent fraudulent or motivated reviews from appearing in our shop in order to help gain the confident customers."
"We're working hard to guarantee that review reflects the customer's experience with a product appropriately.
"We are going to continue supporting CMA with its inquiries and acknowledge its statement that our company has not been found."
Google still has a statement on this issue to publish.