Spam can be described differently, depending on individual experiences and security polices of businesses.
In its most common form, spam is recognized as unwanted email that’s sent to your inbox, trying to nudge the reader to action, most likely, to click on a link, or to open an attachment. Clicking on one of these links will do several things.
There are many steps and stages to prevent and deal with spam. However, one of the simplest is to use spam filters on your computer, have an up-to-date Security Suite installed, and do not open emails that are not recognized.