Do Macs Get Viruses?

Yes. Macs get malware, and they always have. What changed is the kind. The self-spreading viruses of the early 2000s are gone from every platform; what hits a Mac in 2026 is adware, browser hijackers, information-stealing software that the user installed willingly, and, most of all, attacks on the accounts the Mac signs into rather than the Mac itself. This article explains what actually happens to Macs now, what macOS already does about it, where the gaps are, and what a business should run on the Macs it owns.

Where the myth came from

For years Macs were a small share of computers, so criminals wrote for Windows, where the numbers were. macOS is also built on Unix with a permission model that made the old style of virus hard to write. Apple then added layers: Gatekeeper, which blocks unsigned software; notarization, which has Apple scan developers’ apps before they run; XProtect, a built-in malware scanner that updates silently; and System Integrity Protection, which stops even administrators from altering the operating system. All of that is real, and it is why a Mac left alone is safer than a Windows PC left alone. None of it is why the myth persists; the myth persists because it was once nearly true.

What actually hits Macs today

Information stealers

The most active Mac malware families of the last few years are stealers: software disguised as a cracked application, a fake browser update, a “required plugin” to view a document, or a game cheat. The user installs it, enters their password when asked, and the stealer collects saved browser passwords, session cookies, cryptocurrency wallets and the keychain, then sends them to the operator. Gatekeeper warns; the installer tells the user how to click past the warning, and they do.

Adware and browser hijackers

Less damaging and far more common: software that changes the search engine, injects advertisements and reports browsing. It arrives bundled with free downloads and through fake “Flash Player” and “Mac cleaner” prompts. It is why a Mac becomes slow and the browser goes strange.

Account takeover

The biggest risk to a business Mac has nothing to do with the Mac. A phishing email steals the user’s Microsoft 365 or Google password, the attacker signs in from somewhere else, and the company’s email and files are now in the wrong hands. The Mac was merely the screen the phish was read on. See what social engineering is for how it works.

Malicious profiles and extensions

A configuration profile can redirect a Mac’s web traffic and change its settings; a browser extension can read everything on every page. Both are installed by persuading the user, which is the theme of this whole article.

Ransomware, occasionally

Mac ransomware exists and has hit design and media companies, but it is rare. The more common path is the one above: a Mac user’s stolen cloud password leads to ransomware or data theft in the company’s shared files.

What macOS does well, and where it stops

Apple’s protections are good at blocking known malware and unsigned software. Their limits are the limits of any automated check: they do not stop a user who chooses to install something, they do not see a password being typed into a fake page, and they do not notice an attacker signing in from another country. FileVault encrypts the disk, which makes a stolen laptop a lost laptop rather than a breach, but only if it is turned on and the recovery key is kept somewhere the business can find it.

What a business should run on its Macs

1. Endpoint detection and response. Modern endpoint products run on macOS as well as Windows. Huntress managed detection and response adds a security team that investigates and isolates the machine, and SentinelOne stops known and behaviour-based threats on its own. See our guide to choosing antivirus for a business.
2. Multi-factor authentication on every account, because the account is the target. Our guide to setting up MFA covers Microsoft 365 and Google.
3. Device management. Enrolling Macs in mobile device management turns on FileVault with escrowed keys, enforces updates, blocks unwanted profiles, and lets a lost laptop be wiped remotely.
4. Updates on a schedule. Apple ships security fixes often; a Mac two versions behind is missing them.
5. Standard accounts for daily work. A user who is not an administrator cannot approve the installer that the stealer needs.
6. Training. The Mac attacks that succeed are almost all persuasion. Our phishing quiz shows what the persuasion looks like.

Signs a Mac is infected

A browser whose home page or search engine changed on its own. Pop-ups warning about viruses from software you did not install. A fan running at idle and a battery draining fast. New profiles in System Settings you do not recognise. Sign-in alerts from places you have not been. Any of these is worth a call; none of them means the Mac is beyond help.

Mixed offices

Most Minneapolis businesses we support run Windows with a few Macs for design, leadership or personal preference, and the Macs are often the least managed machines in the building. We support all three platforms from one help desk, with the same endpoint protection, the same backups and the same policies, so the Mac is not the exception the attacker looks for. Our IT support page covers how that works day to day.

Common questions

Do I need antivirus on a Mac?

For a business Mac, yes, in the modern sense: endpoint protection that watches behaviour and can isolate the machine, managed by someone who reads the alerts. Apple’s built-in protection is good against known malware and does nothing about a stolen password or an infostealer that arrived as a “cracked” app.

Is Apple’s built-in protection enough?

XProtect, Gatekeeper and notarization stop a lot, and they are why casual Mac malware is rare. They do not stop the current threats: infostealers that the user installs willingly, phishing that steals the account rather than the machine, and malicious profiles or extensions. Those need endpoint detection and, above all, multi-factor authentication.

Can a Mac get ransomware?

Yes, though it is rarer than on Windows. More often a Mac is the way in: a phished Microsoft 365 password from a Mac user gives an attacker the company’s files in the cloud, where the ransomware or the data theft then happens.

What about iPhones and iPads?

Genuine iOS malware is rare because apps are sandboxed and come through the App Store. The risks on a phone are phishing by text, malicious profiles, and a lost device without a passcode or remote wipe. Mobile device management covers the last two.

Talk to us

If the Macs in your office have never had anything installed but Apple’s defaults, we will check them and put the same protection on them as on everything else. Call 952-548-5558 or contact us; the first conversation is free and there is no long-term contract.