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Learn how to remove macro viruses here. SQL injection allows hackers to access and alter a website's database. Learn how SQL injections work and the prevention techniques to keep your data secure.

What is ransomware — is it a virus, or something else? Read our guide to learn how ransomware works and how to prevent a ransomware attack. Privacy Report vulnerability Contact security License agreements Modern Slavery Statement Cookies Accessibility Statement Do not sell my info All third party trademarks are the property of their respective owners.

PC Close-icon. Mac Close-icon. Mobile Close-icon. Business Close-icon. Services Close-icon. Support Close-icon. FREE Download. Built to protect your PC, and your online life. Malware protection Stops viruses , spyware , and malware with six powerful layers of protection.

Email Shield Blocks dangerous email attachments and phishing links that could steal your data. Phishing protection Blocks unsafe links and webpages that could lead to malware or scams. What worked? Anything we can improve? Submit Cancel. We're sorry that didn't solve your issue. What could we have done to help you better?

Thanks for your feedback! Learn how ransomware works and block hackers from holding your files hostage. Doxing, or doxxing, is the release of someone's personal info without their consent. Find out how doxing works and how you can prevent it. The best passwords are strong enough to thwart a brute force or dictionary attack. Find out how to create good, easy-to-remember passwords. Note : If your download did not start automatically, please click here.

If you need to install Avast on a PC without an internet connection, you can download the offline installer here. Worldwide English. In order to view this page correctly, you must have a JavaScript-enabled browser and have JavaScript turned on. We apologize for any inconvenience. Learn how to enable it. No slowdowns or interruptions. Easy to install, effortless to use. Get essential antivirus protection.

Avast Free Antivirus scans Windows devices, like your laptop or desktop PC, for privacy, security, and performance issues, then tells you how to fix things instantly. Over million users worldwide trust Avast. Join them. Intelligent Antivirus Detect and block viruses, malware, spyware, ransomware and phishing.

We use smart analytics to stop threats before they affect you. Enjoy Internet Security Suite extras: McAfee security service - Delays tasks, updates, and alerts so you can use your PC to watch movies, present slide shows or play games without interruption. Integrated anti-virus, anti-spyware, and firewall technologies - Works together to combat today's sophisticated, multi-pronged attacks.

McAfee SystemGuards - Watches your computer for specific behaviors signaling virus, spyware, or hacker activity. Stealth mode - Hides your internet presence, making your computer invisible to hackers. Identity protection, anti-phishing, and WebAdvisor software - Keeps your financial transactions safe. Internet Security Suite also: Protects against harmful programs that monitor, collect, and sell personal info.

Scans and cleans downloaded files and attachments from email and IM. Scans external drives for potential computer threats. Protects against viruses, trojans, worms, bots, and root-kits and repairs and removes infections from files without damaging format or contents.

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