Avast Online Security

Protect yourself from fake websites and phishing scams with our free browser security and web reputation plugin.

Add to Chrome Add to Firefox Add to Edge Add to Opera Only available for Chrome, Firefox, Edge and Opera

Anti-phishing protection for your browser

Avast Online Security checks each website you visit and warns you if it’s unsafe or if it simply has a bad reputation. All this is based on input from our community of 400 million users who watch each other’s backs. And, as a bonus, we also tell you if you’re being tracked.

Get safer search results

View ratings for your searches instantly, based on feedback gathered from our 400 million users.

Avoid malicious websites

Be warned of phishing scams, malicious links and websites infected with malware before you access them.

Spot and block trackers

Stop websites from collecting data on you and tracking your browsing history via cookies.

Easy and free browser security

Add to Chrome Add to Firefox Add to Edge Add to Opera Only available for Chrome, Firefox, Edge and Opera

Want to know more? Visit our Support Center.

Chrome browser logo

Avast recommends using
the FREE Chrome™ internet browser.