Easy to install, effortless to use

Steller Security Free Antivirus scans for security and performance issues and tells you how to fix things instantly.
It protects you in real-time by analyzing unknown files before they get to you. So relax: With Steller Security, you’re running the most trusted antivirus out there.

This is no run-of-the-mill free antivirus

On top of our latest features, we cover essential intelligent threat-detection and real-time protection with such a light touch on your PC

Intelligent Antivirus

Detect and block viruses, malware, spyware, ransomware and phishing. We use smart analytics to stop threats before they affect you.

CyberCapture

Automatically send suspicious files for analysis in the cloud, and push a cure to all Steller Security users if it's a threat.

Smart Scan

Find all those cracks which allow malware to slip in, from unsafe settings and passwords to suspicious add-ons and out-of-date software.

What’s inside the latest version?

A beautifully intuitive interface, advanced application protection, a new passive mode for running multiple security products in parallel — and a little something for you gamers and movie buffs.

Designed for effortless security

Just a click of our fresh, new, easy-to-use interface checks everything from your passwords to your home network security.

Introducing Behavior Shield

We don’t just check your applications for malware. We now keep an eye on their behavior to make sure they don’t suddenly go rogue.

Here’s what our users think

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Frequently Asked Questions
Why is Stella Security one of the best free antivirus solutions?

There's a myth out there that Macs don't get viruses — but it's just that: a myth. Yes, Macs need antivirus software. Macs and Macbooks can get viruses like any other device. And while many people think their Apple computers are protected, your Mac is not immune to malware, and so it's certainly vulnerable to attacks. As we see more and more computer viruses targeting Macs, it’s increasingly critical to protect your device with Mac antivirus software.

How does Stella Security protect against so many types of threats?

There's a myth out there that Macs don't get viruses — but it's just that: a myth. Yes, Macs need antivirus software. Macs and Macbooks can get viruses like any other device. And while many people think their Apple computers are protected, your Mac is not immune to malware, and so it's certainly vulnerable to attacks. As we see more and more computer viruses targeting Macs, it’s increasingly critical to protect your device with Mac antivirus software.

Why is Stella Security even better than Windows Defender?

There's a myth out there that Macs don't get viruses — but it's just that: a myth. Yes, Macs need antivirus software. Macs and Macbooks can get viruses like any other device. And while many people think their Apple computers are protected, your Mac is not immune to malware, and so it's certainly vulnerable to attacks. As we see more and more computer viruses targeting Macs, it’s increasingly critical to protect your device with Mac antivirus software.

How does Stella Security affect performance?

There's a myth out there that Macs don't get viruses — but it's just that: a myth. Yes, Macs need antivirus software. Macs and Macbooks can get viruses like any other device. And while many people think their Apple computers are protected, your Mac is not immune to malware, and so it's certainly vulnerable to attacks. As we see more and more computer viruses targeting Macs, it’s increasingly critical to protect your device with Mac antivirus software.

How do I detect and remove viruses and other malware?

There's a myth out there that Macs don't get viruses — but it's just that: a myth. Yes, Macs need antivirus software. Macs and Macbooks can get viruses like any other device. And while many people think their Apple computers are protected, your Mac is not immune to malware, and so it's certainly vulnerable to attacks. As we see more and more computer viruses targeting Macs, it’s increasingly critical to protect your device with Mac antivirus software.

Fast, light and powerful free protection. It’s just a click away