Avast Online Security & Privacy review

Avast Online Security & Privacy is a reputation extension built around Avast's large user base. It identifies and blocks phishing sites, warns when you visit a site with a bad reputation and shows how a site has been rated by what Avast calls a community of 400 million users. The hover check is handy: point at a link and you see its rating before opening it. It also blocks tracking cookies. Avast is open about the data it collects to make this work: the URL of each page, your feedback on ratings, usage data, an extension identifier, browser and operating system details, and your country. If Avast Secure Browser is installed, the extension opens it automatically when you shop or bank online, which some people will find intrusive. The Chrome listing shows version 22.12.9 updated in September 2025, an older update than most rivals here. It is free to add from the Chrome Web Store, but we could not confirm the price on an Avast US page.

Who it is for

People who like seeing a site's reputation before clicking and already use Avast.

Price

See vendor pricing (USD check pending).

US price check pending. See the vendor pricing page.

Key features

• Identifies and blocks phishing sites
• Site ratings from Avast's community of 400 million users
• Hover over a link to see its rating
• Warnings for sites with bad reputations
• Blocks tracking cookies

Strengths and weaknesses

• Strength: Hover ratings let you judge a link before opening it
• Strength: High Chrome Web Store rating, 4.6 from 25.9K ratings
• Strength: Blocks tracking cookies
• Weakness: Collects URL, usage, device and country data
• Weakness: Last Chrome update listed as September 2025
• Weakness: Opens Avast Secure Browser for shopping and banking if it is installed

Key facts

• Price: Free on the Chrome Web Store
• Chrome users: 5,000,000 (Chrome Web Store)
• Community: 400 million Avast users rate sites
• Ad blocking: No, blocks tracking cookies

Where it ranks

Avast Online Security & Privacy is No. 4 in our Best Browser Security Extensions verdict.