Surfing the net can be dangerous, but do know you can give yourself what i can call a "FirstAid Kit" against malicious sites.
I will talk about this on the most used browsers. First i will discuss Securing your Firefox Browser.
Mozilla: Being the most used browser, with the largest add-on app. Add-ons are like extension to the browser, which are installed into the Mozilla. So what are the types of add-on that can protect you when surfing the net.
1. HTTPS Finder: Its detects and enforces HTTPS connections when available on a site.
2. HTTPS Everywhere : Ensure that every search on our browser sent are
encrypted and at the same time, encrypt most or all of
the browser's communications with some other sites:
3. No Script : Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
4. Secure Login : Protect against phishing, malicious JavaScript code to automatically steal your login data, Websites requiring JavaScript for the login process can be added to an exception list.
5. Webutation : shows you the reputation of a site with a simple green/yellow/red icon and scans websites against virus and bad user feedback
6.Ghostery : Protect your privacy. See who's tracking your web browsing and block them with Ghostery.