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Lesson 8 of 15 · Pop-ups

A warning on your screen does not make it genuine.

A pop-up is a box that suddenly appears on top of what you're looking at.

Photo of a phone showing a pop-up titled Warning: You are currently using an older version of your PDF reader. If you don't update, you will lose your data. Please update now to read more smoothly! With Cancel and OK buttons, over a YouTube advert.
A real pop-up that appeared while watching YouTube.
  • You were not trying to update a PDF reader.
  • The message appeared unexpectedly.
  • It warns that you may “lose your data”.
  • It pressures you to update immediately.