Whether you actually need antivirus on a Mac in 2026 comes down to a real, carefully verifiable technical picture, not the old, outdated “Macs don’t get viruses” myth on one side, and not antivirus-vendor scare marketing designed to sell subscriptions on the other side either. Apple’s built-in protections are real and genuinely, measurably effective at what they do — and also demonstrably, provably bypassable in specific documented cases, including one from just this past week as of this writing. Here’s the honest, fully sourced answer, without the hype in either direction.
Table of Contents
What macOS Actually Includes Built-In
XProtect: Signature-Based Scanning
XProtect is Apple’s own signature-based malware scanner, using YARA rules — pattern-based descriptions of known malware behavior or file structure. It runs entirely automatically in the background whenever an app first launches, whenever a file changes on disk, or whenever new signatures become available, with no visible user interface at all and no manual trigger ever needed. macOS checks for new XProtect signatures daily by default, independent of full OS updates. (Apple Support) This is part of the real decision behind running antivirus on a Mac at all.
Gatekeeper and System Integrity Protection
Gatekeeper verifies code-signing and notarization before allowing an app to launch. System Integrity Protection (SIP), introduced in OS X El Capitan in 2015, restricts write access to core system directories and blocks code injection into protected processes, on by default since 2015. (Apple Support) Weighing antivirus on a Mac against Apple’s own built-in protections comes down to details exactly like this one.
An Important Correction: MRT Is Dead
Apple’s older Malware Removal Tool (MRT) was formally retired on June 17, 2022, replaced by XProtect Remediator (XPR), a modular, behavior-based engine that has historically updated roughly every two weeks. Any current guide describing MRT as Apple’s active removal tool is out of date — XPR is the real, current mechanism. (The Eclectic Light Company) This factor is central to whether antivirus on a Mac makes sense for your specific situation.
Real, Named Mac Malware — Not Hypothetical
CrashStealer: A Notarized App That Cleared Gatekeeper
Jamf Threat Labs published research on July 13, 2026 describing CrashStealer, a C++ infostealer that impersonates Apple’s own crash-reporting framework. It’s delivered as a legitimately notarized, Developer ID-signed dropper that genuinely clears Gatekeeper, then downloads and re-signs its actual malicious payload separately. It specifically targets roughly 80 different crypto-wallet browser extensions and 14 or more password managers, unlocking the system login Keychain itself via a convincingly fake password prompt designed to look like a legitimate macOS system dialog. This is about as strong a real-world “even Apple’s protections aren’t perfect” example as exists. (Jamf Threat Labs, July 2026) This is exactly the kind of detail that should inform your decision about antivirus on a Mac.
XCSSET and Shlayer: Established, Ongoing Threats
XCSSET, a modular macOS infostealer that infects Xcode projects, was documented by Microsoft Threat Intelligence twice in 2025 (March and September) with new obfuscation and persistence techniques each time. Shlayer, discovered by Intego and distributed historically via fake Flash Player installers, remains one of the most prevalent Mac infections in threat reports through 2024-2025, documented to evade XProtect and Gatekeeper via code-signing abuse. (Microsoft Security Blog) This is part of the real decision behind running antivirus on a Mac at all.
Documented Gatekeeper and SIP Bypasses
CVE-2022-42821, nicknamed “Achilles,” was discovered by Microsoft security researcher Jonathan Bar Or and disclosed July 27, 2022 — a crafted AppleDouble metadata file could prevent the quarantine attribute Gatekeeper depends on from being set, letting a malicious app launch without triggering a Gatekeeper prompt at all.
The same researcher previously found “Shrootless,” a real SIP bypass, in 2021. (Microsoft Security Blog) These are real, patched vulnerabilities, not theoretical risk — Apple’s protections are genuinely strong and continuously, actively improving over time, but the honest historical record clearly shows they aren’t, and have never claimed to be, completely infallible against every determined attacker. Weighing antivirus on a Mac against Apple’s own built-in protections comes down to details exactly like this one.
Does the Answer Differ for Business Macs?
Fleet-Managed and Shared-Use Devices
A Mac that’s managed as part of a larger business fleet, or that’s regularly shared across multiple different users, genuinely carries meaningfully different risk than a single person’s own personal laptop that only they ever touch — more people installing more software from more sources widens the realistic attack surface considerably. Businesses that regularly handle client data, financial records, or other regulated information generally have a stronger, more clearly defensible case for layered, centrally-managed endpoint protection, regardless of which underlying operating system is involved, Mac very much included. This factor is central to whether antivirus on a Mac makes sense for your specific situation.
MDM and Centralized Management
Organizations that are already using Mobile Device Management (MDM) tooling to enforce timely OS updates and reasonable app restrictions across their fleet are, in effect, already extending and meaningfully reinforcing Apple’s own built-in protections at real organizational scale — a real, practical middle ground between “trust the built-ins alone” and “add a full third-party suite everywhere,” worth considering before defaulting straight to the latter for an entire fleet. This is exactly the kind of detail that should inform your decision about antivirus on a Mac.
Real Statistics: How Much Mac Malware Actually Exists
Malwarebytes’ own 2024 State of Malware report found 11% of all detections recorded on Mac computers in 2023 were genuine malware (the rest largely adware and potentially unwanted programs) — explicitly framed by Malwarebytes as debunking the “Macs don’t get malware” myth, though it isn’t a direct Mac-vs-Windows infection-rate comparison. (Malwarebytes, March 2024) AV-Comparatives’ 2026 Mac Security Test, using 1,500 recent macOS malware samples, found top third-party products (CrowdStrike Falcon, Kaspersky Premium for Mac) hit 100% detection — a real, current independent benchmark worth checking directly if you’re comparing specific products. (AV-Comparatives, June 2026) This is part of the real decision behind running antivirus on a Mac at all.
Apple’s Own Protections Aren’t Static Either
A Recent, Unusual Signature Gap
As of July 10, 2026, independent Mac security researcher Howard Oakley documented that XProtect had gone 37 days without a signature update, and XPR had gone 142 days without an update — unusually long gaps compared to XPR’s historical roughly-biweekly cadence. Oakley speculates this may reflect an internal Apple retooling effort rather than neglect, but either way it’s a real, current, dated example that Apple’s own protections aren’t a fixed, always-current shield — they have real update cycles, and those cycles can slip. (The Eclectic Light Company, July 2026) Weighing antivirus on a Mac against Apple’s own built-in protections comes down to details exactly like this one.
Why This Matters for Your Decision
This isn’t any kind of reason to panic about your Mac specifically — it’s simply a reason to treat the phrase “macOS has built-in protection” as a real, meaningful, genuinely useful baseline to build on, rather than treating it as a permanent, complete, one-time guarantee that never requires any further thought once it’s in place. A layered approach that doesn’t depend entirely on any single vendor’s update cadence, Apple’s included, is a genuinely defensible position for anyone with real risk exposure. This factor is central to whether antivirus on a Mac makes sense for your specific situation.
The Honest Verdict: Who Actually Needs Third-Party Antivirus
Lower-Risk Users
If you install software almost exclusively from the Mac App Store or well-known, notarized developers, keep macOS updated, and don’t routinely handle files from unknown sources, Apple’s built-in stack (XProtect, Gatekeeper, SIP, XPR) covers a genuinely large share of realistic risk on its own. This is exactly the kind of detail that should inform your decision about antivirus on a Mac.
Higher-Risk Users
If you frequently download and install software from outside the official App Store, regularly share a single Mac with multiple other people, routinely handle sensitive files such as financial, client, or medical data, or hold any cryptocurrency in a browser-based wallet extension — exactly what CrashStealer specifically targets — a layered approach with real-time third-party protection is a genuinely defensible, evidence-based choice, not fear-based marketing. See our honest antivirus comparison for products independently tested on macOS specifically. This is part of the real decision behind running antivirus on a Mac at all.
What Security Researchers Actually Say, Not Marketing
A Genuinely Mixed, Debated Position
This is honestly a debated question among security professionals, not a settled one in either direction. Security publications increasingly lean toward “layered protection recommended for higher-risk users” rather than a blanket “AV required” stance, while consistently acknowledging that Apple’s built-ins are real, functioning, and continuously improving. That’s a genuinely defensible, evidence-based framing — not marketing hype from either the “Macs are immune” camp or the “you desperately need our product” camp. Weighing antivirus on a Mac against Apple’s own built-in protections comes down to details exactly like this one.
What an Independent Mac Malware Researcher Tracks
Patrick Wardle, a respected independent Mac security researcher and former NSA employee who runs Objective-See, publishes an annual “Mac Malware of the Year” roundup tracking new malware families discovered each year. The broad trend reported across multiple years of this roundup is a real, gradual increase in newly discovered Mac-specific malware families year over year — worth checking Objective-See’s own site directly for the current year’s exact count, since this is a live, growing dataset rather than a fixed historical figure. This factor is central to whether antivirus on a Mac makes sense for your specific situation.
Does This Change on Apple Silicon (M-Series) Macs?
The shift to Apple Silicon (M1 through the current M-series chips) added real, additional hardware-level security features — a Secure Enclave for cryptographic key storage, and stricter default code-signing requirements at the kernel level compared to older Intel Macs. These are genuine, real hardware-level improvements worth knowing about, but they address a fundamentally different layer of the overall threat model than the specific malware families and documented Gatekeeper bypasses already covered above in this guide, which largely operate at the application layer where a signed, notarized, Gatekeeper-cleared dropper like CrashStealer doesn’t need to break any hardware protection at all to do its damage.
In short: Apple Silicon’s security improvements are real and worth having, but they don’t meaningfully change the overall calculus laid out in this article, since the documented threats and social-engineering scenarios described above don’t rely on the specific low-level vulnerabilities Apple Silicon happens to have closed. This is exactly the kind of detail that should inform your decision about antivirus on a Mac.
A Practical Checklist, Whichever Way You Decide
- Keep macOS itself fully updated at all times — this is the single highest-value action regardless of whether you add third-party antivirus, since it keeps XProtect, Gatekeeper, and XPR all current.
- Be skeptical of software from outside the App Store or well-known developers, especially anything prompting you to bypass a Gatekeeper warning manually.
- Use a password manager rather than a browser-saved wallet extension where possible — exactly the kind of target CrashStealer specifically goes after.
- If you decide you want third-party protection, check independent, current test results (AV-Comparatives’ Mac-specific test, linked above) rather than a vendor’s own marketing claims about macOS performance.
- Don’t assume any single layer, Apple’s or a third party’s, is a complete guarantee — the documented bypasses and update gaps above apply to any single-vendor approach, not just Apple’s.
Do You Need Antivirus on a Mac: Frequently Asked Questions
Is it true that Macs don’t get viruses?
No — that’s an outdated myth. Malwarebytes’ own data found 11% of Mac detections in 2023 were genuine malware, and real, named threats like XCSSET and CrashStealer are actively documented by security researchers. This is part of the real decision behind running antivirus on a Mac at all.
Is Apple’s Malware Removal Tool (MRT) still active?
No — MRT was retired by Apple in June 2022 and replaced by XProtect Remediator (XPR), a more modern, modular, behavior-based detection and removal engine. Weighing antivirus on a Mac against Apple’s own built-in protections comes down to details exactly like this one.
Can malware really bypass Gatekeeper on a Mac?
Yes, documented cases exist — CVE-2022-42821 (“Achilles”) let malware launch without triggering Gatekeeper’s check, and CrashStealer, reported in July 2026, was distributed as a legitimately notarized app that cleared Gatekeeper by design. This factor is central to whether antivirus on a Mac makes sense for your specific situation.
Do I need antivirus if I only download from the Mac App Store?
For lower-risk, App-Store-only usage, Apple’s built-in protections cover a large share of realistic risk. Higher-risk usage — sideloading, shared devices, crypto wallets, sensitive files — makes third-party protection a more defensible addition. This is exactly the kind of detail that should inform your decision about antivirus on a Mac.
What’s the single strongest reason to consider Mac antivirus in 2026?
Real, documented infostealers like CrashStealer specifically target crypto-wallet extensions and password managers through legitimately notarized, Gatekeeper-clearing droppers — exactly the kind of threat XProtect’s signature-based approach can miss until a matching signature exists. This is part of the real decision behind running antivirus on a Mac at all.
Are Apple’s protections always up to date?
Not always — a documented July 2026 gap showed XProtect Remediator had gone 142 days without an update, unusually long compared to its historical roughly-biweekly cadence. Apple’s protections are real but have their own update cycles like any other vendor’s. Weighing antivirus on a Mac against Apple’s own built-in protections comes down to details exactly like this one.
Do security researchers agree on whether Macs need antivirus?
It’s genuinely debated rather than settled. The trend leans toward recommending layered protection for higher-risk users specifically, while acknowledging Apple’s built-in protections are real and continuously improving for everyone else.
Is Mac malware actually increasing over time?
Independent researcher Patrick Wardle’s annual Mac malware roundups have tracked a real, gradual increase in newly discovered Mac-specific malware families year over year, though exact current figures should be checked directly on Objective-See’s own site.
Ultimately, treat this article’s evidence — real named malware, documented bypasses, real update-cadence gaps — as the basis for your own risk assessment rather than a one-size-fits-all verdict. The right answer genuinely depends on how you actually use your specific Mac, not on which side of the debate shouts louder.