A company is going around buying abandoned Chrome extensions from their original developers and converting these add-ons into adware. The extension in question is named Particle (formerly known as YouTube+) and is a simple tool that allows users to change the UI and behavior of some of YouTube’s standard features. In May, the extension’s original author announced it was planning to abandon the extension and build a new one called Iridium. The new owner added a folder named “algoad”” to the original extension’s code to inject ads into websites such as Google
Source: and Booking.com.”