An ad-blocking extensions with more than 300,000 active users has been found uploading user browsing data and tampering with users’ social media accounts because of its new owner introduced a malware in its updates a few weeks ago.

This new which was first reported on Github said the former developer of the Nano Adblocker and Nano Defender extensions – Hugo Xu told a few weeks ago that he no longer had the time to maintain the project and thus, sold the rights of the versions available in Google’s Chrome Web Store.

A few days ago, Raymond Hill, maker of the uBlock Origin extension which Nano Adblocker is based has revealed that the new developers had rolled out updates which added the malicious code into the extension.

Now with the new malicious code, the extension is checking whether users are using the extension tools, infected browsers automatically giving likes for a massive number of Instagram posts with no input from users, and can gain access to user accounts with the users consent.