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Learn how to remove viruses from your Android phone and iPhone with our expert guide. Scan and remove mobile malware, then protect against future threats. Website safety checks are vital to staying safe online, but how can you tell if a site is secure?

Use a website safety checker and follow these tips. Macro viruses are written in the language used for software programs like Word and Excel, and spread quickly. 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. AVG Internet Security. Blocage des liens et pages dangereux pouvant rediriger vers des malwares ou escroqueries. Et avec son interface claire et conviviale, vous pouvez naviguer sans perdre de temps. Windows 10 , 8 et 7 pour Windows XP, cliquez ici.

Pour Mac : anglais uniquement. Un cheval de Troie est un logiciel qui cache un programme malveillant. Quel est le meilleur antivirus gratuit pour Windows en ?

PC Close-icon. Mac Close-icon. If you think your identity has been stolen, find out how to report it to the FTC, the police, or the government. Find out which one is the most suitable for you. 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. CyberCapture Automatically send suspicious files for analysis in the cloud, and push a cure to all Avast users if it's a threat. Wi-Fi Inspector Automatically detect weaknesses in your home Wi-Fi and strangers piggybacking on your network. 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.

Layer upon layer of security. Ryan R. Eric S. Daryl C. Why is Avast one of the best free antivirus solutions? How does Avast Free Antivirus protect against so many types of threats?

How does Avast Free Antivirus affect performance? How do I detect and remove viruses and other malware? All you need is a PC with Windows 10 , 8.