Macs don’t get viruses, right? Wrong, sadly. Your Mac may be safer from malware than the average Windows PC, thanks to its Unix core and Apple’s default security settings in the OS, but it’s not immune. All it takes is one thoughtless click on a link in an email or on a website, and your Mac could be infected.
The good news is that performing a Mac virus scan is very easy and if it finds anything, getting rid of the virus is very straightforward, too.
How to check your Mac for a virus
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There are a number of tell-tale signs that your Mac has a virus. If it’s not displaying any of those, there’s probably nothing to worry about. So, before you scan your Mac for a virus, here are a few things to check.
As the malware has the role to steal your data, you should stay protected all of the time and avoid any suspicious web pages and apps. To check malware on MacBook, Apple started to build malware detection and file quarantine. But you can also install the ClamXav program or check your MacBook and browser regularly as well. Download Malwarebytes for Mac (the free version) and you get a 14-day trial of the premium version with automatic (real-time) virus and malware protection. After 14 days, your trial reverts to a limited disinfection scanner. Buy the premium version now to prevent infection in the first place.
1. Is your Mac behaving erratically?
This could include applications crashing, web browsers loading pages you didn’t ask for, and unusually high traffic on your network. Colt trooper mk v serial numbers.
2. Has it started running very slowly all of a sudden?
Some viruses run processes that hog CPU cycles and leave little capacity for the tasks you want to carry out.
3. Are you seeing adverts or pop-ups for things you would never normally see?
Adware viruses are designed specifically to show adverts in the hope that you’ll click on them.
4. Have you noticed software appear on your Mac that you didn’t deliberately install?
Some viruses appear in the form of browser extensions, others run in the background, but some may appear as applications in your Applications folder. Before we'll explain how to scan Mac for malware, check these 5 tell-tale signs.
If any of the above are true, it’s possible that your Mac has a virus, but don’t panic, it may be relatively easy to remove.
How to run a malware scanner on Mac
So how to check for malware on Mac? There are several Mac virus scanners that allow you to scan your system. However, it’s very important that you don’t just google ‘free Mac antivirus software.’ Many sites that claim to offer free antivirus tools in fact host viruses themselves. So, you go to the site looking for a solution and end up making the problem worse. It’s important to use a reputable tool. We recommend using CleanMyMac X.
CleanMyMac X detects thousands of malware threats, including adware, spyware, worms, ransomware, cryptocurrency miners, and if it finds something suspicious, it offers immediate removal. Here’s how to scan your Mac for malware:
- Download CleanMyMac X (free edition here) and launch the app.
- Click on the Malware Removal tab.
- Click Scan.
- Click Remove.
Malware Monitor is another thing I love about CleanMyMac X. And this Mac malware scanner works in real-time. Whenever an adware attempts to enter some protected areas on your Mac, you’ll get instantly notified.
How to get rid of suspicious apps
If you find an application that you didn’t intend to install, you should get rid of it. But don’t just drag it from your Applications folder to the Trash, that won’t remove every trace of it from your Mac. Applications store files in a number of different places in your Mac’s Library folders. You could hunt them down and remove them manually, but it’s quicker and easier to use a dedicated uninstaller like CleanMyMac X. That way, you can be sure you will remove every trace of the application and no stray files will be left behind.
- Download CleanMyMac for free here.
- Launch it from your Applications folder.
- In the Utilities section, click on Uninstaller.
- Look through the list of applications until you see the one you want to get rid of.
- Check the box next to it.
- Press the Uninstall button.
How to prevent your Mac from getting a virus
Scanning Mac for malware is one thing. But prevention is always better than cure. So, if you want to make sure that every virus scan returns a clean bill of health, here’s what to do.
- Never click a link in an email unless you’re 100% sure where the email has come from and where the link will take you. Reputable companies and banks won’t ask you to click a link to log into an account, for example.
- Never download anything unless you’re certain what it is. That includes movie files, software updates, games, and anything else you’re not absolutely certain about.
- Keep your Mac updated with the latest version of macOS. That doesn’t mean you have to be running the very latest OS, but if you’re running, say, Sierra, make sure you install the latest updates when they become available.
Scanning your Mac for threats is very easy. To check Mac for malware, you can download the free version of CleanMyMac X which is an Apple notarized app. With its help, you get rid of any applications you didn’t intend to download and scan your whole system for malware very quick and easy. Give it a go.
System cleanup in one click
Computer viruses hold a sweet spot between boring, everyday occurrences, dating back to the 70s, and dramatic, science fiction-fueled monsters that will haunt us in the digital world. Whether you want to know how to find virus on MacBook Air, MacBook Pro, or iMac, learning to keep your information safe first is necessary and easy, with a few tips from the professionals.
In this guide, we explain how to detect malware on Mac (both with virus checker software and manually), as well as how to protect your Mac from getting infected in the first place.
Can your Mac get a virus?
“Do you need a virus checker for Macs?” one may ask. The answer is yes, all computers, even Macs, are vulnerable to malware (short for malicious software). A popular malware virus of 2017 was embedded into a Word document — a Mac Word file, not a PC one. In 2018, Apple discovered flaws in their Intel processor chips that could lead to two kinds of very ambitious strains of Mac viruses too. It’s wild to think that even iPads and iPhones can contract malware.
While Apple takes a lot of security precautions, the level of protection depends on your knowledge of how to check for malware on Mac.
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Know what a Mac virus is
Most of us are familiar with recognizing what a virus looks like thanks to its atrocious design and alarming vocabulary. However, not all viruses take the shock-and-scare approach to getting on your Mac. The latest adware could be a Trojan hiding in one of your Xcode projects, which is hard to recognize and equally hard to delete.
While Apple’s new M1 Macs are considered more secure than Intel-based models, they get viruses too. The infamous Silver Sparrow virus — disguised as the macOS Installer Javascript API — specifically targets Macs with M1 chips and is believed to have infected over 30k Macs at the time of writing.
Mac viruses often take a form of a .dmg file, because it was created by Apple itself to help install good software on your computer. If you’re ever trying to download something you know is supposed to be an image, music, movie, or document, but you get a .dmg file instead — that is as red as a red flag gets in terms of viruses. Do yourself a favor and delete that file immediately.
How to know that your Mac is infected
Before you learn how to find virus on Mac, get acquainted with the main signs of your Mac being infected. The common red flag is your Mac going slow — but don’t panic, your Mac could have performance issues for many reasons, including low RAM, resource-hungry apps, etc. Typically, apart from slow Mac, viruses will give you one of the following problems:
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- New extensions just appeared in your browser from nowhere
- Your browser homepage has changed
- You’re being stalked by annoying ads and pop-ups
- You get security alerts as a result of Mac virus checking
- You can’t access your private files.
How to scan your Mac for virus
Why virus scan for Mac is important? Because Macs are vulnerable. Malware, adware, spyware, malicious files, worms, trojans, phishing software, you name it, you should check for it.
The old way of thinking was that because there are more PCs than Macs in the world, the “virus people” would focus on them instead of Macs. But, we’re not in the 2000s anymore. In fact, in 2018, Apple moved to the fourth position in global laptop shipments. This means Macs are no longer shiny white boxes that are meant for fun and entertainment.
Not only do we run our businesses off Apple devices and different versions of macOS but we also store family photographs, send out sensitive info — and, thanks to cloud computing, each device is synchronized. This means you should have a reliable Mac virus checking tool.
Run a Mac virus scan in one click
So how do I check for malware on my Mac? There are two answers to this question — you can either inspect your Mac step by step manually or get it all done for you. If you want complete Mac security, there is no better tool than CleanMyMac X, which can effortlessly scan for all the latest viruses, malware, spyware, and more. Here’s how it works:
- Open the app and click Smart Scan
- Wait a few minutes
- Check the results of the Mac virus scan under Protection
- If the app has found any malicious files, click Remove to get rid of them.
Using a tool like CleanMyMac X makes getting rid of viruses, of all shapes and formats, very easy. After the scan, it tells you what it’s found and gives you the option to remove it completely right then and there. Additionally, it will give you all kinds of other great options on how to optimize your Mac’s performance and free up some storage space.
Scan your Mac for viruses with CMM X
Run an instant malware scan to identify and remove suspicious files from your Mac. There’s no tool that can do it better than CleanMyMac X.
How to do a virus scan on Mac manually
In an ideal world, scanning for viruses should be automatic and happen nearly continuously. In reality, you can consider yourself reasonably safe if you scan your Mac once a week. However, not everyone has a good virus checker. “So how do I run a security check on my Mac manually?” you may ask. Here are the top five things to do:
Clear downloads
As we’ve mentioned before, .dmg files could be the source of Mac viruses. While everything you download, including .dmg, typically goes into the Downloads folder, it’s smart to clear it first. Go to Finder > Downloads and delete the files you no longer need from there.
Check for browser extensions
The second step you should take is to check for browser hijackers and adware extensions:
- Go to Safari > Preferences. See what the Homepage URL is currently set to and correct it if needed
- Then proceed to the Extensions tab and uninstall any you don’t recognize, as they could spy on you, save your private data, and redirect you to their malicious websites.
Remove suspicious apps
See whether you have applications installed that you don’t recognize:
- Go to the Applications folder via Go > Applications in Finder or using the shortcut Shift + Command + A
- Scroll through the list and delete any unknown applications
- Then empty the Bin.
Delete suspicious login items
Another step on your “malware removal Mac” mission is to remove any login items that act strange. Maybe you don’t recognize some of them or you don’t remember enabling them. Here’s how to stop these items from launching on startup: Apple menu > System Preferences > Users & Groups > Login Items > uncheck the boxes. Latest adobe reader el capitan.
Create a new profile in macOS
If a Mac virus seems to be targeting the user and not the device, you can solve the problem by creating a new profile in macOS. To add a new user profile, do the following:
- Go to the Apple menu > System Preferences > Users & Groups
- Unlock the page to make changes
- Click the plus button and choose the type of user you want to add (admin or standard)
- Add a new user name, password, and click Create User.
How to stop viruses from stealing your data
It’s a common misconception that viruses only happen to people who are gullible, ignorant, or technologically illiterate. The stigma is that hackers prey on people, when in reality, they prey on behavior. Our basic assumption with Macs is that we expect Apple and our applications to have done all the security work for us. In truth, every user has to adjust their own behavior when using their Mac.
Do you use public WiFi? Consider getting a Virtual Private Network (VPN) to encrypt the connection between your laptop and the external network. Shimo is a great VPN manager app that will help you here. While using it, raw information (whether sensitive or not) can’t be fed to any malicious programs lurking on your Mac, and hackers on the same network won’t be able to decode anything you’re working on.
ClearVPN will help you block access to malware sites, which is a great security precaution. You can also use this stellar VPN app to remain anonymous online at all times and encrypt your connection.
Speaking of encryption, Macs using OS X Lion and later come with the option to encrypt their hard drives using FileVault 2. Although encryption won’t prevent viruses from entering your computer (for that, you’ll need a scanner), it would still be very helpful in stopping viruses from stealing your information. To turn on FileVault:
- Go to System Preferences
- Select Security & Privacy
- Navigate to the FileVault tab
- Choose Turn On FileVault.
Keep your Mac secure and virus-free
Unfortunately, viruses don’t live in an easy-to-find location like your computer’s desktop. They can be embedded within an application, most notably, your favorite web browser, where it’s easier for them to view what you’re viewing and track what you’re typing. If you kept on seeing weird websites taking over your search bar, it's a sign that your browser has been hijacked. Other applications can get corrupted or infected too, especially if they have particularly weak security systems. Another example could be an email app you use or an open-source application that is behind on its patch upgrades. Check out how to get rid of malware on mac.
If you think one of your applications is infected, a typical knee-jerk reaction would be to delete the whole thing and redownload it. Often, this will do the trick, but there are simpler solutions available. Clearing the application's cache should always be your first step, and, if there are optional hidden files, consider removing them as well.
To remove an application’s cache and get rid of Mac malware from the Library folder:
- Open Finder > Go > Go to Folder
- Type ~/Library/Caches and choose Go
- Delete any particular files inside the folder.
If you are unsure about deleting cache files manually, use CleanMyMac X:
- Open CleanMyMac X
- Go to System Junk and click Scan
- When the scan is complete, choose Review Details
- Select User Cache Files and pick the caches you’d like to delete
- Click Remove.
Unfortunately, not all viruses are easy-to-understand files that just sit on your computer. Sometimes they are root certificates that intercept your passwords and messages and send a copy to hackers. To effectively secure yourself from this, only download apps with valid developer certificates. Which ones are those? It’s hard to know but Apple built a feature that could help you here.
- Go to System Preferences
- Select Security & Privacy
- In the “Allow apps downloaded from” select App Store and identified developers.
Finally, keep an eye on your Mac’s performance 24/7 with iStat Menus. This will allow you to identify malware threats as early as possible. iStat Menus is a system monitoring tool that lives in your menu bar, with real-time insights about your Mac. CPU, network, disk load, resource-hungry apps, iStat knows more than you do about how your Mac performs. So when it slows down because of malware, this app will alert you first.
You are well on your way to being protected from malware now. But, the truth is, simply avoiding viruses is not enough. You need to be proactive and know how to check for malware on Mac.
As mentioned above, hackers who want to steal your information don’t target you specifically, they target your behavior. So, with this in mind, change your behavior when it comes to using your Mac in potentially unsafe ways.
Arm your computer with encryption tools (like FileVault and a VPN), so that your information can’t be stolen. Practice a healthy dose of skepticism when downloading files. But, most importantly, get professional apps like CleanMyMac, iStat Menus, ClearVPN, and Shimo — all of which are available on Setapp for your to try free. So get a scan now and see what it says.