Norton Safe Web (sometimes abbreviated NSW) is a service developed by Symantec Corporation that is designed to help users identify malicious websites.

Safe Web delivers information about websites based on automated analysis and user feedback.

The 2012 release of Safe Web Lite added Google Chrome support.

[2] Norton Safe Web is complained about by many users/web administrators as websites will be classified as "unsafe" incorrectly.

[4] There have been reported instances of bloggers criticizing the quality of Norton Safe Web who have since been blacklisted by the tool.

Symantec stated that phishing sites change rapidly, and one Norton service may be using older definitions than the other.

[7] Also, Norton Safe Web blocks numerous sites with third party extensions such as Mailgun and New Relic.