Browser extensions can be hugely useful, plugging gaps in functionality, adding cool new features and options, and generally just making life on the web more convenient. At the same time, they have the potential to be a serious security risk—many ask to see everything you see online, some change key settings inside your browser, and they can operate and communicate with their developer (or with advertisers or other parties) in the background without your knowledge.

Read full article on Wired – Threat Level