Comment Re:why? (Score 4, Insightful) 778
Are there still security issues with having JS enabled?
Javascript is used by most malware installation systems. The typical route is that a trustworthy hacked site is modified to include a <script> tag with its source on the malware hosting domain. The resulting script will then use some mechanism to attempt to install malware, either simply dropping an executable download on the visitor and hoping they run it, or attempting to exploit either a browser or a browser plugin bug. Turn off javascript, and the exploit is never downloaded, so can't run.
There are also direct browser attacks that would require javascript to function, e.g. http://www.mozilla.org/security/announce/2013/mfsa2013-53.html or http://www.mozilla.org/security/announce/2013/mfsa2013-46.html (to pick a couple from the last month or two).
So, yes, your system is still less secure if you have JS enabled than if you don't.