Contrary to popular belief, Macs are not immune to trojans and viruses. In the last couple of years, there’s been a significant uptick in the number, variety and sophistication of malware targeting Mac users. And some of it is so sneaky, you might not even know about it until a Mac virus scan shows your machine’s been infected.
While Mac attacks are still a fraction of those on Windows (or even Linux), Mac malware has become a lot harder to detect and remove. Plus, Mac users tend to be targeted individually, rather than en masse, often with malware that’s freely available online and disguised as harmless apps. That means the attacker doesn’t need to be a computer genius — a disgruntled ex could probably figure it out.
Protecting your Mac from trojans and viruses is crucial to ensure that your personal data, privacy and overall system integrity remain intact. This comprehensive guide will walk you through the essential steps to safeguard your Mac and introduce Intego, a top-tier solution for robust protection.
This post contains affiliate links. Cult of Mac may earn a commission when you use our links to buy items.
Why Macs need virus protection
Photo: Stephen Smith/Cult of Mac
In early 2023, Sarah, a freelance graphic designer from Colorado, experienced a severe malware attack on her MacBook Pro. Like many Mac users, Sarah believed her system was relatively safe from viruses and malware. This sense of security led her to download a seemingly legitimate software tool, which she needed for a client project, from a third-party website.
Alarmed by these symptoms, Sarah took her Mac to a cybersecurity expert, who identified the malware as Shlayer, a trojan usually disguised as an update for Adobe Flash Player. Shlayer was not only siphoning her personal data but also providing the attackers remote access to her system.
After the cybersecurity expert removed the malware, Sarah enhanced her security setup with reputable antivirus software and adopted safer browsing habits. It was a crucial reminder that no operating system is immune to cyberthreats. Careful vigilance is essential, even for Mac owners.
Mac is no longer immune to viruses, trojans and ransomware
Many users operate under the misconception that Macs are invulnerable to malware and never think to use a virus scanner or take other precautions. However, as Mac usage increases, so does the incentive for cybercriminals to develop malware targeting macOS. Common threats include adware, spyware, ransomware and phishing attacks.
In 2023, the macOS malware landscape saw significant changes, marked by a notable increase in the variety and sophistication of threats targeting Mac users.
Intego's Mac Premium Bundle X9 is a great way to protect yourself and your kids online. This comprehensive suite of tools protects you from malware and identify theft. It also cleans up and optimizes your Mac and safely backs it up.
Macworld magazine rates X9 as the best antivirus: "Intego’s Mac Internet Security X9 is our pick of the bunch, making it the best antivirus."
For just $3.33 a month, the suite includes:
VirusBarrier: Best antivirus for your Mac.
NetBarrier: Mac firewall and network protection.
Mac Washing Machine: Clean, optimize and speed-up your Mac.
ContentBarrier: Keep your kids safe online.
Personal Backup: Backup & secure your essential data.
Intego Privacy Protection: Total online freedom and privacy.
Key statistics and trends
Increase in malware families: Researchers discovered 21 new macOS malware families in 2023, a 50% increase from 2022. These included a mix of information stealers, ransomware, backdoors and other types of malicious software for Macs.
Types of Mac malware: The most common type of new macOS malware in 2023 was information stealers, accounting for a significant portion of new threats. This malware “is designed to help threat actors collect and exfiltrate sensitive data from compromised devices, including passwords, cookies and cryptocurrency wallets,” according to SecurityWeek. Examples include PureLand, Realst, MetaStealer, AtomicStealer (AMOS) and MacStealer.
Distribution and infection rates: While macOS is still less-frequently targeted than Windows and Linux, it accounted for about 1% of all malware detections in a 2023 study from Elastic, a decrease from previous years when macOS had a higher share. Cryptominers like XMRig were among the most common types of macOS malware detected.
Emerging threats: Several new ransomware strains targeting macOS emerged, such as variants of the LockBit ransomware and new threats like Turtle. These developments indicate a growing interest among cybercriminals in targeting Mac systems with more severe types of attacks. An up-to-date Mac virus scanner can detect even the latest threats.
APT involvement: Advanced Persistent Threat (APT) groups, particularly those linked to North Korea, remain active in developing macOS malware. Notable examples include SmoothOperator, RustBucket and KandyKorn.
macOS malware vs. Windows
Volume: Windows remains the most targeted operating system, with malware detections significantly outnumbering those on macOS. In recent data, Windows accounted for about 52% of malware detections, whereas macOS only accounted for about 1%.
Type and sophistication: While macOS malware tends to be less prevalent, it is becoming increasingly sophisticated. The use of macOS-specific techniques and the adaptation of Windows malware to macOS indicate a shift toward more complex and targeted attacks on Apple devices. You need a dedicate Mac virus scan to detect these ever-evolving threats.
Let’s delve into some recent examples of Mac malware and their impacts in 2023 and 2024.
Examples of recent Mac malware a virus scan can detect
Graphic: Cult of Mac/Red Canary
1. OSX/Shlayer
Discovered in 2018, Shlayer has persisted into 2024 as a significant threat. It typically spreads through fake Adobe Flash Player updates, leading to the installation of adware. Once installed, it bombards users with intrusive ads and can slow down system performance. Shlayer’s impact goes beyond annoyance. It also packs the potential to download additional, more dangerous malware to unwitting users’ Macs.
2. Silver Sparrow
In 2021, researchers found Silver Sparrow infecting Macs with both Intel and M1 processors. By 2023, its variants continued to pose threats. This Mac malware operates stealthily, leaving minimal traces while connecting to command and control servers for further instructions. Its full potential remains unknown, making it a worrisome threat.
3. XLoader
A successor to FormBook, XLoader emerged in 2021 and remains active. This malware can steal credentials, take screenshots, and log keystrokes, leading to severe privacy breaches and potential identity theft. It often spreads via email phishing campaigns, highlighting the need for vigilance in handling emails.
4. ThiefQuest (EvilQuest)
Discovered in mid-2020, ThiefQuest evolved and remained a threat into 2023. Initially masquerading as a legitimate software installer, it encrypts user files and demands a ransom. Beyond its ransomware capabilities, ThiefQuest also installs a keylogger and steals files, making it doubly dangerous.
5. Atomic Stealer (AMOS)
Emerging in 2023, Atomic Stealer targets macOS specifically. It is designed to steal sensitive data, including passwords, browser cookies and cryptocurrency wallet information. This malware is particularly insidious, because it can exfiltrate data from applications like Apple Notes and contact lists. The impact of Atomic Stealer can be devastating, leading to potential financial loss and identity theft.
6. Cuckoo
Cuckoo is a more recent addition to the Mac malware landscape, identified in early 2024. This malware proves particularly dangerous because it employs advanced techniques to avoid detection, such as hiding its processes and encrypting its communications. Cuckoo can capture screenshots, record keystrokes and gain unauthorized access to sensitive information. Its ability to adapt and evolve makes it a persistent threat to Mac users.
Impact of Mac malware and how a virus scan can help
Photo: Kaspersky
The impact of these malware threats can be significant. If your Mac is running slow, crashing often or otherwise acting weird, you should consider running a trustworthy Mac virus scan ASAP. Left to run wild, Mac malware can cause nasty problems like:
- Data breaches: Personal and financial information can be stolen, leading to identity theft and financial loss.
- Decreased system performance: Malware can slow down your Mac, cause frequent crashes, and reduce overall productivity.
- Financial losses: Ransomware like ThiefQuest can demand substantial payments for file decryption, and adware can lead to unintended purchases or subscriptions.
- Privacy invasion: Spyware and keyloggers can monitor your activities, capturing sensitive information like passwords and private communications.
Steps to protect your Mac from malware
1. Keep your software updated
Regular updates are critical. Apple frequently releases updates that include security patches to protect against newly discovered vulnerabilities. Ensure your macOS and all installed applications are up to date to benefit from the latest security enhancements.
How to update your Mac:
- Go to System Settings.
- Click on General > Software Update.
- Follow the prompts to install available updates. (It’s a good idea to turn on automatic updates while you’re here if you haven’t already.)
2. Enable firewall protection
Your Mac’s built-in firewall acts as a barrier between your system and potential threats from the internet. Make sure it’s enabled to block unauthorized access.
How to enable the firewall:
- Open System Settings.
- Click on Network > Firewall.
- Toggle the switch to activate your Mac’s built-in firewall.
3. Only download apps from trusted sources
Only download software from the Mac App Store or directly from developers’ official websites. Third-party sources can often host malicious software disguised as legitimate applications.
4. Use strong passwords and two-factor authentication
Ensure all your accounts have strong, unique passwords. Enable two-factor authentication (2FA) wherever possible for an added layer of security.
5. Be cautious with email attachments and links
Phishing attacks are a common method for distributing malware. Avoid clicking on suspicious links or downloading attachments from unknown sources. Always verify the sender’s email address and look for signs of phishing.
6. Perform regular backups of your Mac
Regularly back up your data using Time Machine or another reliable backup solution. In case of a malware attack, having a backup ensures you can restore your system without data loss.
7. Use a reliable antimalware solution with a Mac virus scanner
One of the most effective ways to protect your Mac is by using a reputable antimalware solution. A quick Mac virus scan can show if your computer’s infected, but it’s better to stop the malware from ever making it to your machine. This brings us to our recommended software.
Why choose Intego for Mac virus scan and malware protection?
Protection and comprehensive security
Screenshot: Intego
Intego is designed specifically for macOS, offering tailored protection that addresses the unique security challenges faced by Mac users. Its comprehensive Mac Premium Bundle X9 suite includes features like:
- Real-time scan for Mac viruses and malware: Detects and blocks malware before it can cause harm
- Firewall: Enhances your Mac’s built-in firewall to provide advanced network protection.
- Anti-phishing: Protects you from phishing attacks by enabling malicious domain protection in your browsers.
- Backup solution: Integrated backup tools ensure your data is always safe and recoverable.
- Mac parental controls: Helps keep kids safe while online.
- Mac cleaner: Cleans up and speeds up your Mac.
- VPN: Its virtual private network helps safeguard your online privacy and security.
User-friendly interface
Intego’s intuitive interface makes it easy for users of all levels to navigate and manage their security settings. Its seamless integration with macOS ensures that it runs efficiently without compromising system performance.
Regular updates and support
Intego provides frequent updates to stay ahead of emerging threats. The company’s dedicated customer support team is available to assist with any problems, ensuring your Mac remains protected at all times.
Conclusion: Why you need a Mac virus scanner and antimalware protection
Protecting your Mac from malware is essential in today’s digital landscape. By following the steps outlined above and investing in a robust security solution like Intego, you can significantly reduce the risk of malware infections and keep your Mac running smoothly and securely. Don’t wait until it’s too late — take proactive measures to safeguard your digital life today.
Download Intego’s Mac Premium Bundle x9 suite.
Intego's Mac Premium Bundle X9 is a great way to protect yourself and your kids online. This comprehensive suite of tools protects you from malware and identify theft. It also cleans up and optimizes your Mac and safely backs it up.
Macworld magazine rates X9 as the best antivirus: "Intego’s Mac Internet Security X9 is our pick of the bunch, making it the best antivirus."
For just $3.33 a month, the suite includes:
VirusBarrier: Best antivirus for your Mac.
NetBarrier: Mac firewall and network protection.
Mac Washing Machine: Clean, optimize and speed-up your Mac.
ContentBarrier: Keep your kids safe online.
Personal Backup: Backup & secure your essential data.
Intego Privacy Protection: Total online freedom and privacy.
