Once they are in your system, they replicate themselves and do damage to your computer. Unfortunately, they show up as legitimate-looking files, movies, songs, and software that one can easily be fooled to download. Trojans are dangerous viruses that can harm your computer in ways that may cost you a fortune. There are different kinds of spyware like Adware, Trojans, Cookie Trackers, and keyloggers.Īdware tracks your browsing habits and personal information to bombard you with advertisements. They steal your personal information, browsing history, financial data, and official information to use against you. Spywares are viruses that sneak into your computer in different ways. But with the advancement of technology, hackers are finding enough ways to inject MacOS with spyware. Earlier, there was a notion that Mac computers do not get infected with viruses, spyware, and malware.