When it comes to computer viruses, Mac users often think they’re immune. However, Macs can and do get viruses, just like any other computer. If you’re using a Mac, it’s important to stay informed on the risks and to know what to do if you think your computer has a virus.

Viruses are malicious software that can infect your computer, causing it to malfunction or even crash. They can steal your data, send emails from your account without your knowledge, or even lock your computer and demand a ransom payment. 

In this guide, we tell you everything you need to know about handling your Mac’s virus.

Signs Your Mac Might Have a Virus

1) Unwanted Advertising Pop-Ups

Unwanted advertising pop-ups are one of the most common signs of a Mac virus. These pop-ups usually appear when you open a web browser or other application and are usually accompanied by loud, intrusive audio. 

These pop-ups usually try to get you to click on a link or download something that could contain malicious software or worse. It’s important to avoid clicking on these pop-ups and to run a virus scan on your Mac to make sure it is virus-free.

2) Consistent Redirecting of Webpages

Consistent redirecting of webpages is a sign that your Mac may have a virus. If you find that your browser is frequently redirecting you to different websites that you didn’t intend to visit, it’s possible that your Mac is infected with malicious software. 

This type of virus can cause a lot of problems, so it’s important to have it removed as soon as possible.

3) Sudden Sluggishness and Lag

You may notice that your Mac is running slower than usual or that applications are taking longer to open and respond. 

You may also experience frequent freezing or crashing of your system. If you’re experiencing any of these symptoms, it’s important to take action immediately to protect your system from further harm.

4) New Features You Didn’t Install

If you notice that your Mac has new features or applications that you didn’t install, it could be a sign that your system is infected with a virus. Malware can install itself on your Mac without your knowledge, adding features and applications that you didn’t intend to have. 

If you come across any new features or applications that you don’t recognise, it’s best to remove them immediately to protect your Mac from further harm.

5) Search Engine Changes You Didn’t Make

Another sign that your Mac may have a virus is if your search engine has been changed without your knowledge. Malware can alter your search engine settings, redirecting your searches to malicious websites. 

If your search engine has been changed without your consent, it’s important to take action to protect your system from further harm.

What to Do When Your Mac Has a Virus

If you suspect that your Mac has a virus, the first step is to run a scan with an antivirus program to identify any malicious software. However, bringing your Mac to a professional for repair is often the best option when you’re dealing with a complex issue.


Although the risk of getting a virus is lower than with a Windows PC, Mac users should still take proper precautions to protect their data from viruses. If you believe your Mac might have a virus, get professional help.

Forest City Computer Repairs can help you remove a virus from your Mac. We offer Mac repair in London to have your units running smoothly in no time. Get in touch with us today to get started.