Have you ever been hacked? If you have, you’ll know what this is all about.
Unlike in the movies, most times you get hacked, you may not even know it. You usually don’t get the black screen with a skull on it or any indication that you’re hacked. That happens very rarely even though I’ve seen it as well.
I’ve been hacked many, many times and the majority of the times, my server was exploited in order to use it as a bulk emailer. A malicious script is injected and it sends out bulk, spam emails to long lists of subscribers. Thousands, even millions of them.