What is Antivirus and What Does It Really Protect?

Authored by Dennis Pang


What is antivirus? That’s a good question. What does it really protect? That’s an even better question. 


Over the years, I’ve come to recognize that different people define antivirus differently. Some see it as way to keep hackers from crashing their computers. Others see it as a comprehensive set of protections. Neither definition is entirely on the money. 


With this blog, I hope to give everyone a clear definition of what antivirus does well, along with what it doesn’t do at all. The fact is that antivirus is just one form of online protection. There are other forms of protection as well, and understanding antivirus’ role in your overall mix of online protection is an important part of staying safer online. 


What is antivirus? 


Antivirus software protects your devices against malware and viruses through a combination of prevention, detection, and removal.  


For years, people have installed antivirus software on their computers. Today, it can also protect your smartphones and tablets as well. In fact, we recommend installing it on those devices as well because they’re connected, just like a computer—and any device that connects to the internet is a potential target for malware and viruses.  


In short, if it’s connected, it must get protected. 


One important distinction about antivirus is its name, a name that first came into use decades ago when viruses first appeared on the scene. (More on that in a bit.) However, antivirus protects you from more than viruses. It protects against malware too. 


Malware is an umbrella term that covers all types of malicious software regardless of its design, intent, or how its delivered. Viruses are a subset of ma ..

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