Do Macs need antivirus? An honest answer for 2026

What macOS already does

• Gatekeeper checks that an app from outside the App Store is signed by a registered developer before it opens for the first time. Since macOS 15 Sequoia you can no longer skip it with a right-click; you have to allow the app in System Settings › Privacy & Security.
• Notarization means Apple has scanned an app for known malware before the developer shipped it. Apple can revoke an app later, and macOS then refuses to open it.
• XProtect is Apple's built-in antivirus. It checks apps when they first open and when they change, gets new signatures daily without a macOS update, and removes known malware it finds in the background.
• System Integrity Protection keeps even administrator apps out of macOS's own files, and privacy permissions make apps ask before they read your documents, camera, screen or keystrokes.

All of this is on by default. You can check that it still is in System Settings › Privacy & Security, or with Tidy My Mac's Security Settings check.

What Mac malware looks like now

Most Mac malware doesn't break in. It gets you to let it in, and then steals rather than breaks things:

• Password and crypto stealers, such as Atomic Stealer (AMOS), are the most common. They take saved browser passwords, the keychain, crypto wallets and files, often within minutes.
• They arrive through fake download pages, often from ads at the top of search results, through pirated apps, and through fake “verify you are human” pages that ask you to paste a command into Terminal. That last trick, called ClickFix, skips Gatekeeper because you run the command yourself.
• Adware and browser hijackers change your search engine and fill your browser with ads, and scam pages pretend your Mac is infected; see the Apple Security Alert scam.
• Ransomware that encrypts your files is rare on the Mac so far, but it exists.

Where the built-in protection falls short

• XProtect recognizes malware Apple already knows about. New stealers change every few days, and there is a gap before Apple's signatures catch up.
• It mainly checks apps. A command you paste into Terminal, or a script you run yourself, isn't stopped by Gatekeeper. macOS Tahoe 26.4 added a warning for some pasted commands, but not all.
• It works quietly and has no scan you can run. You can't ask macOS to check a file you aren't sure about.
• Safari warns about known phishing sites, but other browsers and apps rely on their own lists, and nothing in macOS blocks scam sites everywhere.
• It doesn't remove adware and browser hijackers that aren't strictly malware, such as unwanted extensions and profiles that change your browser settings.

Who needs antivirus on a Mac

You can probably do without one if:

• your apps come from the App Store or a few developers you know, and you install macOS updates when they come;
• you don't use pirated apps, and you never paste commands from web pages into Terminal.

A second layer is worth it if:

• you download apps, plugins or files from the web often, or open attachments from people you don't know;
• others use the Mac, especially children or relatives who click what they are shown;
• you keep crypto, banking or work data on it, where one stolen password costs more than a subscription;
• you pass files to Windows users and don't want to forward their malware, which can't harm your Mac but can harm theirs.

What to look for in Mac antivirus

• Protection from phishing and fake download sites in every browser, since that is where most infections start.
• Real-time scanning of downloads, including installers and disk images, not only scans you start by hand.
• A clear quarantine you can review, instead of files deleted without asking.
• Honest pricing. Avoid apps whose free scan always finds alarming problems, and check the renewal price before you buy.

Habits that matter more than any app

1. Install macOS updates and app updates when they come. Turn on Automatic Updates in System Settings › General › Software Update.
2. Download apps from the App Store or the developer's own site, typed in yourself, not from an ad in search results.
3. Never paste a command from a web page, email or chat into Terminal unless you know exactly what it does.
4. Think twice before clicking Open Anyway in Privacy & Security for an app macOS blocked.
5. Use a password manager and two-factor authentication, so a stolen password isn't enough, and back up with Time Machine.

Antivirus in Tidy My Mac

• Antivirus scans new files in Downloads and Desktop as they arrive while the app is open, including installers and disk images, catches up on anything that arrived while it was closed, and runs Quick, Normal and Deep scans of the rest of your Mac. It uses the open-source ClamAV engine, runs on your Mac, and moves what it finds into a quarantine you can review.
• Web Protection blocks known phishing, scam and malware sites in every browser and app.
• Ransomware protection watches for files being encrypted, and Adware removes extensions and profiles that hijack your browser.

We make Tidy My Mac, so read the advice above with that in mind; it holds whichever app you choose, or none.