They say the business of crime is always booming, and with costs related to cybercrime expected to top $10.5 trillion by 2025, that business could be coming from your pocket. Criminals use various methods to lift personal data, financial information, and security details from unsuspecting victims, including malware, ransomware, worms, and viruses. Although these methods are unique in how they function and steal critical data, the average user calls them viruses. And unlike what some believe, viruses are as old as computers, they impact Macs just as much as PCs, and they are not victimless crimes. Now let's look at some of the most famous, devastating, and complex computer viruses ever to hit devices!