Do you download a bunch of youtube videos using the Youtube Queue Chrome Extension?
The Chrome extension has been pulled due to hijacking your search engine but more like it are still there.
The weird thing is Google has no idea who published the extension.
Reddit users were in a tizzy about it.
“But even Google had trouble identifying those responsible for the Youtube Queue extension, a testament to the Chrome Web Store’s lax security procedures and oversight that allows confusingly similar extension names.” – The Register