Another option is the "classic whitelist," where sites that are trusted are added to a list that NoScript doesn't block. For example, users can built an "easy blacklist," where they select untrusted sites on which JavaScript and plugins should be blocked. The NoScript mobile version shares many of the same functions as the desktop one. But security analysts predict that mobile phones will increasingly be attacked for the sensitive data stored on the devices. There are around 1,000 pieces of malware circulating for mobile devices, which pales in comparison to malware built for Windows desktop operating systems. In 2008, researchers Robert Hansen and Jeremiah Grossman discovered a clickjacking attack involving Adobe Systems' Flash application that could give remote access to a victim's Web camera and microphone. Those hidden buttons are delivered by an invisible iframe, which is a window that brings other content into the target website. It also can block "clickjacking," another kind of attack where a user is tricked into clicking on certain parts of a Web page with hidden buttons that perform malicious actions. Cross-site scripting can allow an attacker to steal information or potentially cause other malicious code to run. The mobile version, called NoScript 3.0a8, includes protection against cross-site scripting attacks, in which a script drawn from another website is allowed to run that shouldn't. NoScript's developer, Giorgio Maone, wrote on his blog on Saturday that porting the application for Firefox on Android and Maemo was not easy, as it was a full rewrite of the extension, and "there's still a lot of work ahead." Many Web-based attacks on computers are initiated by JavaScript. NoScript is a security tool that can be used to block the execution of JavaScript, Java, Flash, and plugins by websites that are viewed as being potentially malicious. With hardly any user intervention required, NoScript offers a superb level of protection against site borne security threats and ensures that you have full control over what is allowed to run in your browser window.The developer of the widely used Firefox extension NoScript has released a version for the Android and Maemo operating systems. The settings you choose to use can be quickly backed up by saving them as a bookmark so they can be restored when you have to reinstall, or transferred to another computer. You can choose to be notified when a script is blocked, so should a site fail to function as expected you can opt to enable individual page elements as required. When you encounter such as site, you can easily add it to a whitelist so that scripts will be allowed to run now and in the future - ideal for banking and shopping sites. The addon automatically blocks all such content, but there may well be occasions when you need it to run. NoScript is a Firefox addon that can be used to prevent the running of scripts on the sites you visit. In addition to reducing the performance of sites, there is also the potential for scripts to be used for malicious purposes. Web plugins such as Flash, Java and JavaScript can be used to add a range of interesting features to web sites, but there are also a number of downsides.
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