In the warning it showed to buyers, Amazon wrote: “Honey tracks your private shopping behavior, collects data like your order history and items saved, and can read or change any of your data on any website you visit.” Politico’s Ryan Hutchins tweeted a screenshot of the warning and noted that that’s “how all browser extensions work — including Amazon’s own extension, which provides a similar service.”

Amazon is telling shoppers that the browser extension Honey — it gives you coupon codes and other ways to save — is malware.

Paypal bought Honey in November for $4 billion. That’s one extensive piece of Malware. pic.twitter.com/Di6I8RAX2X

— Ryan Hutchins (@ryanhutchins) December 20, 2019

The Amazon Assistant browser also tracks prices and lets buyers compare items across retailers. And, as Wired notes, Google will also tell users that it can “read and change all your data on the websites” they visit when they install the extension on Chrome.

It’s not entirely clear what Amazon saw that made it label Honey, in particular, a security risk. A spokesperson only told the publication: “Our goal is to warn customers about browser extensions that collect personal shopping data without their knowledge or consent.” Honey denied that it’s a security risk, telling Wired that its rules are clearly spelled out in its privacy and security policy. In its privacy rules, Honey admits that it “collects information that [users] share directly” with it. However, the company emphasizes that it “does not track [their] search engine history, emails, or [their] browsing on any site that is not a retail website” and that it will never sell their data.

That’s because PayPal has snapped up Honey, the popular money-saving service, in a deal worth $4 billion. It’s PayPal’s biggest ever acquisition and will see both companies attempt to further “simplify and personalize shopping experiences for consumers,” while helping more than 30,000 retailers get those customers through their online checkouts.

Over 17 million people already use a Honey app or browser extension. Once installed, Honey tracks price changes on retailer websites but can also automatically input coupon codes when a user enters an online checkout. If no coupons are available, Honey may also offer loyalty points that can be redeemed as gift cards.

Given that PayPal already has 24 million online merchants on its books, its latest acquisition will allow it to better target and personalize experiences for consumers the minute they arrive on a website. With companies like Apple, Google and Facebook moving further into the payment space, capturing the attention of shoppers at the start of their visit rather them helping them pay for their goods at the end could give PayPal the springboard it needs to become much more than just a payment company.