Antivirus Software For Windows - Detect, Remove and Prevent Malware Infections

Free Antivirus software for Windows. Detects, removes and prevents malware infections. Get a 14-day free trial of our premium antivirus. Get real-time protection with advanced features like VPN for privacy on public Wi-Fi, web protection to avoid phishing scams, identity monitoring and more. Our award-winning antivirus has multiple layers of malware-crushing tech, including virus removal, adware protection, spyware removal and more.

Malware is software designed to harm your devices, steal personal information or hijack your computer’s resources to mine cryptocurrency (like Bitcoin). Common signs of malware infection include data-usage spikes, slow internet speeds, app crashes and adware that keeps you from surfing the web without permission.

Many cybercriminals distribute malware through phishing emails that contain malicious attachments or links. However, merely opening an email won’t trigger the attack -- you have to click on or download the attachment or link to become infected. Using a reputable antivirus solution and practicing safe email handling will help to prevent malware infection.

You can also prevent malware attacks by regularly updating your operating systems, programs and apps as soon as new versions are available. Many premium antivirus programs have vulnerability scanners that alert you to outdated software and can automatically update it for you.

A heuristic-based detection engine and contained file runtimes are two other important features to look for in an antivirus program. Heuristic detection looks for suspicious behavior and attributes in files rather than just searching for a precise signature listed on a virus blacklist. This can protect against new and emerging threats. Comodo uses heuristics and a virtual environment called Containment to safely run unknown files, which ensures that even new and undiscovered malware is prevented from attacking our users’ computers and devices.