Reddit users seem to have identified the problem.

How can an extension change hands with no oversight?

Google has just blocked one of our favorite Chrome extensions for apparently containing malware. So what actually happened?

Seemingly out of nowhere, the “Save image as Type” Chrome extension was marked for removal, with Google warning users ...

A company that rents out access to more than 10 million Web browsers so that clients can hide their true Internet addresses has built its network by paying browser extension makers to quietly include ...