eBay Accuses Amazon of Trying to Steal SellersAccording to eBay, Amazon employees sent thousands of messages to eBay sellers to get them to move over to Amazon Marketplace. This could mean Amazon has broken California law as well as its own user agreement.

This week, Amazon received a cease-and-desist letter from eBay. It accuses the company of breaking California's Comprehensive Computer Data Access and Fraud Act by using eBay's messaging system to try and poach sellers.

"We have uncovered an unlawful and troubling scheme on the part of Amazon to solicit eBay sellers to move to Amazon's platform," eBay explained toTheWall Street Journal. "We have demanded that Amazon end its unlawful activity and we will take the appropriate steps, as needed, to protect eBay."

According to the report, more than 50 Amazon sales representatives had sent over 1,000 messages to eBay sellers in an attempt to move them over to Amazon's Marketplace (which is where Amazon facilitates user-to-user selling, in contrast to its retail site). EBay's user agreement states that its messaging platform cannot be used for promoting sales outside of eBay.

EBay says it was alerted to the scheme approximately 11 days ago, according toCnet. EBay claims that the evidence it has goes back years, with Amazon employees intentionally hiding their email addresses and the name of their company. Such details could have alerted eBay's monitoring system to the activity.

According toCNBC, this was done by spelling out email addresses, suggesting offline contact and adding extra characters to obscure the word "Amazon." Adding extra characters into words is a common tactic whichplagues automated systemsdesigned to read messages.

Amazon has said that it is investigating the claims, whichThe Telegraphreports are mainly focused on operations in China. However, some employees in the U.S. were apparently involved in the allegations last month.

The battle between eBay and Amazon is a fierce one. For the former, it has morphed from a community-driven website to an important platform for many larger businesses. The latter, meanwhile, is bent on dominance in the shopping space and its Marketplace branch can charge sellers for shipping, marketing and other aspects of selling products.

Moreover, with Amazon releasingmore smart-home productsto get customers further invested in its ecosystem, the sheer ubiquity of the company poses a concern for eBay. This is compounded by its integration of businesses such as Whole Foods, which it bought in2017 for $13.7 billion, into itsPrime perks.