Scans the average Mac in under 30 seconds. Run the malware scanner in the background while you boot up your favorite game and it's done by the time you're ready to play. You can even customize your scans to run when you're not using your Mac at all, at any day, at any time. The operating system's name refers to the Mojave Desert and is part of a series of California -themed names that began with OS X Mavericks. It succeeded macOS High Sierra and was followed by macOS Catalina. MacOS Mojave brings several iOS apps to the desktop operating system, including Apple News, Voice Memos, and Home.

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Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by a product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

macOS malware includes viruses, trojan horses, worms and other types of malware that affect macOS, Apple's current operating system for Macintosh computers. macOS (previously Mac OS X and OS X) is said to rarely suffer malware or virus attacks,^[1] and has been considered less vulnerable than Windows.^[2] There is a frequent release of system software updates to resolve vulnerabilities. Utilities are also available to find and remove malware.^[1]

History[edit]

Early examples of macOS malware include Leap (discovered in 2006, also known as Oompa-Loompa) and RSPlug (discovered in 2007).

An application called MacSweeper (2009) misled users about malware threats in order to take their credit card details.

The trojan MacDefender (2011) used a similar tactic, combined with displaying popups.

In 2012, a worm known as Flashback appeared. Initially, it infected computers through fake Adobe Flash Player install prompts, but it later exploited a vulnerability in Java to install itself without user intervention. The malware forced Oracle and Apple to release bug fixes for Java to remove the vulnerability.

Bit9 and Carbon Black reported at the end of 2015 that Mac malware had been more prolific that year than ever before, including:^[2]

• Lamadai – Java vulnerability^[3]
• Appetite – Trojan horse targeting government organizations
• Coin Thief – Stole bitcoin login credentials through cracked Angry Birds applications

A trojan known as Keydnap first appeared in 2016, which placed a backdoor on victims' computers.

Adware is also a problem on the Mac, with software like Genieo, which was released in 2009, inserting ads into webpages and changing users' homepage and search engine.

Malware has also been spread on Macs through Microsoft Word macros.

Ransomware[edit]

In March 2016 Apple shut down the first ransomware attack targeted against Mac users, encrypting the user's confidential information.^[4] It was known as KeRanger. After completing the encryption process, KeRanger demanded that victims pay one bitcoin (about US$400 at the time, about US$51,801.90 as of February 18, 2021) for the user to recover their credentials.^[5]

References[edit]

1. ^ ^ab'Mac OS X Malware details'. Retrieved 2015-03-12.CS1 maint: discouraged parameter (link)
2. ^ ^ab'2015 Mac OS X Malware'. Retrieved 2016-03-21.CS1 maint: discouraged parameter (link)
3. ^'Lamadai Mac Operating System Attack'. Retrieved 2016-03-21.CS1 maint: discouraged parameter (link)
4. ^'Mac OS X Attack March 2016'. Retrieved 2016-03-07.CS1 maint: discouraged parameter (link)
5. ^'Apple Shuts down First ever ransomware'. Retrieved 2016-03-07.CS1 maint: discouraged parameter (link)

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