Browser Extensions Are a Privacy Nightmare: Stop Using So Many of Them

Browser extensions are much more dangerous than most people realize. These small tools often have access to everything you do online, so they can capture your passwords, track your web browsing, insert advertisements into web pages you visit, and more. Popular browser extensions are often sold to shady companies or hijacked, and automatic updates can turn them into malware.
by Chris Hoffman via How-To Geek