5. Old version of web browser
Many years of never ending appealing for users to update their software, exceptionally web browser, sometimes seems to be waste of time. Some people probably don’t want to realize malware can break into their computers just by visiting one simple webpage. If you don’t update your software for about one year, web browser will probably contains the tens of exploitable vulnerabilities.
Checking for updates in Firefox is the matter of the two clicks
But unfortunately there are a lot of other vulnerabilities in web browsers that are not public and attackers can exploit it successfully on millions of computers. For your understanding think about just a computer shutdown. It’s really easy to turn off computer through exploiting the web browser vulnerability, just by visiting the malware website.
6. Enabled JavaScript
Today there are 95% of all users which have enabled JavaScript scripting in their browsers. But if you want to have more secure PC you should disable JavaScript or make a website white list where scripting is enabled. Not just your browsing will be more secure, but it would really make your surfing faster. Firefox users can use great extension – NoScript. With this useful piece of software you can control all executed scripts in your browser.
You can disable JavaScript through Tools->Options->Content and uncheck the “Enable JavaScript” button
Most of all vulnerabilities in web browsers coming from bad JavaScript code parsing. Don’t mention that disabled JavaScript hardening browsers against phishing tricks. With JavaScript webmasters can track their users, get their OS version information, used web browser, monitor resolution and more. Using NoScript extension is really useful.
Useful information:
http://noscript.net/
http://www.alanwood.net/demos/enabling-javascript.html
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