Most devices today come with some form of security out of the box. But built-in tools are designed to provide baseline protection, not comprehensive coverage. As cyberthreats evolve, an additional layer of defense can significantly reduce your risk of infection and data loss.
Here’s what you need to know to make the right call for your device.
Do I need antivirus software?
Yes, you need antivirus protection, and especially on Windows. While modern operating systems like Windows, macOS, Android, and iOS have built-in security tools, they’re focused on baseline protection. For many users, relying solely on default defenses may not be enough.
If ransomware infects your computer or phone, it will encrypt your files — either everything, or the stuff you really care about, like photos, documents, or years of saved work. Then you get a message demanding the ransom, usually in crypto or another untraceable method. But the worst part is the countdown timer: built into the ransom note and counting down to when your files will be permanently deleted — or worse. Ransomware doesn’t target everyone, but if you get attacked, it can be brutal: you either comply or deal with what happens next.
– Liudvikas Paukštė, former Windows App Team Lead at Surfshark (Source)
Windows devices face the most threats by far, largely due to the system’s widespread use. Malware and ransomware target macOS and mobile systems less frequently — however, they’re not immune from attacks, either.
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Operating System
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Percentage of systems targeted by ransomware
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Windows
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91%
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macOS
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7%
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Android
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6%
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iOS
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4%
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Data from Statista, 2026
What if my device already has an antivirus?
Built-in tools like Microsoft Defender and Apple’s Gatekeeper provide solid core defenses, especially for users who take a proactive approach to cybersecurity.
However, third-party antivirus software typically offers broader protection, with advanced threat detection, anti-phishing solutions, and specialized privacy tools. For users who download files, bank online, use public Wi-Fi, or share devices often, dedicated antivirus software can add an important layer of security.
Here’s how built-in protection works across major platforms — and where it may fall short.
Windows
Windows has long included built-in antivirus protection through Microsoft Defender. In modern versions of Windows, it provides real-time malware scanning, firewall protection, and basic ransomware safeguards. For many users, it’s a strong starting point and performs well in independent tests.
However, Defender focuses primarily on core malware detection. Advanced features like enhanced identity protection, broader web monitoring, or bundled privacy tools typically require additional software. Users who download frequently, use public Wi-Fi, or want more control over security settings may benefit from a dedicated antivirus solution.
macOS
macOS includes built-in protections such as XProtect, Gatekeeper, and System Integrity Protection. These tools help block known malware on Macs and prevent unauthorized apps from running.
That said, Macs are not immune to threats. Built-in tools rely heavily on signature-based detection and system-level controls. They don’t always provide the same level of real-time web protection, phishing detection, or cross-platform security features as third-party antivirus software.
iOS
iOS uses a closed ecosystem with strict app review policies and sandboxing, meaning apps operate in isolated environments. This significantly reduces the risk of traditional malware infections.
Because of system restrictions, antivirus apps on iOS can’t scan the device in the same way they can on desktops. Instead, they focus on features like web protection, identity monitoring, and secure browsing. While iOS is generally secure, additional protection can still help against phishing, data breaches, and unsafe networks.
Android
Android includes Google Play Protect, which scans apps for known malware and monitors suspicious behavior.
However, Android’s open ecosystem makes it more flexible — and potentially more exposed — than iOS. Users can install apps from third-party sources, increasing risk. Dedicated antivirus software can provide deeper scanning, anti-phishing tools, app permission monitoring, and additional privacy controls.
What if you don’t use any antivirus at all?
Not using antivirus software doesn’t automatically mean your device will get infected — especially if you practice strong cybersecurity hygiene and rely on built-in protections.
However, without dedicated antivirus software, you’re relying entirely on default safeguards and your own awareness. If a new threat bypasses built-in defenses, there’s no additional layer to catch it (that said, an antivirus isn’t guaranteed to stop every hacker, either).
For cautious, low-risk users, that may be acceptable. For anyone who stores important data, downloads regularly, shops or banks online, or shares devices with family members, having dedicated antivirus software reduces the margin for error.
Pros and cons of antivirus software
For many users, additional protection provides peace of mind — but some might struggle. Here’s a quick overview of the main advantages and drawbacks:
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Antivirus pros
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Antivirus cons
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Real-time threat detection
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Can slow down older devices
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Advanced ransomware and phishing protection
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Can generate false positives
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Web and download scanning
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May show upgrade prompts
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Extra privacy tools (VPN, password manager, data leak alerts)
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Some features may overlap with built-in tools
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Broader threat intelligence databases
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Requires setup
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The biggest advantage of third-party antivirus software is threat coverage. Many solutions use advanced behavioral detection, large malware databases, and AI-based monitoring to identify threats before they cause damage.
On the downside, antivirus programs can cause noticeable spikes in system resource usage, especially on older machines. Still, for users who want stronger real-time monitoring and additional security features, this should be a minor, occasional inconvenience.
How to choose the right antivirus software
Not all antivirus programs offer the same level of protection or usability. Instead of focusing only on brand names, look at the features and overall experience.
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Factor
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Why it matters
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Free trial
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Lets you test performance and compatibility before committing
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Extensive database
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Improves detection rates for known and emerging malware
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Customization options
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Allow you to adjust scans and notifications to your needs
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Speed and performance impact
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Ensures your device doesn’t slow down during scans
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Real-time protection
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Monitors threats continuously, not just during manual scans
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File and download scanning
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Prevents infected files from executing
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Privacy policy
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Shows how your data is handled and protected
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User-friendliness
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Security tools should be easy to navigate and configure
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The best antivirus software balances strong protection, performance, and ease of use — helping you stop and get rid of viruses without overwhelming you with unnecessary complexity.
Do you still need an antivirus if you use a VPN?
Short answer: yes. A VPN (Virtual Private Network) and antivirus serve completely different purposes.
A VPN protects your internet connection and privacy. Antivirus protects your device and files from malicious software. One doesn’t replace the other, and a VPN alone won’t protect you from viruses and all forms of hacking, either.
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VPN
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Antivirus
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Encrypts your internet traffic
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Detects and removes malware
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Hides your IP address
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Blocks ransomware and spyware
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Protects data on public Wi-Fi
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Scans files and downloads
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Improves online privacy
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Monitors suspicious behavior in real time
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Doesn’t stop viruses
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Doesn’t encrypt your traffic
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Using a VPN and antivirus software together provides broader coverage: privacy + device security.
Conclusion: is built-in protection enough?
There’s no need to panic — but you shouldn’t rely on luck, either. Built-in security tools are a solid starting point, yet they’re not designed to catch everything. If you store important data, shop or bank online, or simply want fewer blind spots, adding a dedicated antivirus is a practical step toward stronger protection.
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Get SurfsharkFAQ
Is free antivirus software safe?
Free antivirus software can be safe, but it all depends on the provider. Since completely free products still need to generate revenue, some may rely on ads or collect user data, so it’s important to review the company’s reputation and privacy policy before installing.
Do I need virus protection software for Windows 10 or Windows 11?
Yes, antivirus software is recommended for Windows 10 and Windows 11. Microsoft Defender offers solid built-in protection, but third-party antivirus tools can provide broader threat detection, phishing protection, and extra security features. Malware is known to target Windows system processes, such as svchost.exe.
Should I use paid antivirus software on a Mac?
Yes, paid antivirus software can add meaningful protection on a Mac. While macOS includes built-in security features, dedicated antivirus programs typically offer stronger web protection and more advanced threat detection.
Do I need to install paid antivirus software for my iPhone?
No, traditional antivirus software isn’t necessary for iPhones. iOS restricts app access through sandboxing and strict app review policies, though security apps can still help protect against phishing and unsafe websites. To learn more, see how to check for viruses on iPhone.
Do I need antivirus protection for my iPad?
No, iPads don’t require traditional antivirus software. Like iPhones, they rely on built-in system restrictions, but additional security apps can provide web protection and identity monitoring features.
Does Linux need an antivirus?
In most cases, Linux doesn’t require antivirus software. It’s less frequently targeted and has strong permission controls, though antivirus software may be useful for servers or shared systems.
Do I need to install antivirus software on my Android phone?
Yes, antivirus software is recommended for Android phones. While Google Play Protect scans apps for threats, Android’s open ecosystem increases exposure to malicious apps and phishing attacks.
Do small businesses need antivirus software?
Yes, small businesses do need antivirus software. It can help detect and block malware, ransomware, and other cyberthreats that may compromise sensitive data, disrupt operations, and lead to financial or reputational damage. That said, any antivirus for small businesses should be combined with other security measures, like firewalls and employee training, for full protection.
