Browsers & Accounts · Course 3
Extensions: Helpful or Harmful
Learn what extensions can see and keep only the ones you trust.
- 1What Extensions Can See12 min · Read extension permissions in plain words and limit where each one works.
- 2When Good Extensions Go Bad11 min · How trusted extensions turn harmful, and why stars and reviews can fool you.
- 3Extensions Installed Behind Your Back12 min · Spot extensions you never added, then remove them and reset the browser.
- 4Keeping a Lean Browser11 min · Fewer extensions, trusted stores and separate profiles keep you safer.
- 5Challenge: Grandma Ruth's Crowded Browser12 min · Help Grandma clean out 14 extensions and win back her search engine.
Hands-on
Do it on the practice computer
Lessons have labs you can try in your browser, plus questions that earn points toward the Extension Auditor badge.
Start lesson 1