Eranet News on January 21th,2014. Google has removed two Chrome browser extensions from its store that were found to have been serving intrusive adware on users computers, reports The Guardian.

The extensions, “Add to Feedly” and “Tweet This Page”, were “silently” updated to include codes that served unwanted ads to customers.

Both extensions had less than 100,000 users.

Over the weekend, Amit Agrawal, developer of the “Add to Feedly”, revealed that he had sold the extension to a unknow buyer, in which the new owner added the adware code that did not adhere to Google’s terms and conditions.

“It was a four-figure offer for something that had taken an hour to create and I agreed to the deal,” wrote Agarwal on his website.

Meanwhile, a similar situation occurred with the “Tweet This Page” extension, which had also been purchased and modified to serve unwanted ads and “hijack Google searches.”

According to The Wall Street Journal, the extensions were removed after The Wall Street Journal had notified Google of the malware.

Developers of bigger Chrome extensions, such as “Honey” that has around 300,000 users, has also been approached by third parties looking to purchase the extension.

“Over the past year we’ve been approached by malware companies that have tried to buy the extension, data collection companies that have tried to buy user data, and adware companies that have tried to partner with us. We turned them all down,” stated “Honey” developer.