Modern computers are designed to go to sleep when you’re not using them. When you put your Mac to sleep, the display turns off and most of the computer’s activity ceases. This standby mode is designed to save power. However, your Mac is a light sleeper; a lot goes on when your Mac is not awake.
In this article, I will explain what happens when a Mac goes to sleep, what different types of sleep modes exist, and how you can find out precisely what is happening on your Mac when it isn’t awake. Then we’ll take a look at some security implications to keep in mind regarding sleeping Macs.
Read the rest of the article on The Mac Security Blog.