Today I saw an interesting question posted on the jQuery support group asking if jQuery is virus &amp; trojan free. I found it a bit of a strange question considering that:
<ul>
	<li>The jQuery Project has been alive and growing for 3 years</li>
	<li>The library itself is basically text</li>
</ul>
I have heard of occasions where Norton AV would throw false positive alerts on packer or minified versions of jQuery but that's Norton's fault for bad heuristics. So I wanted to address it here.

The jQuery downloads are basically text files that we manage. We have a tremendous number of users downloading and leveraging jQuery from our sites daily so the likelihood that we'd know something was up is VERY good. In addition, a ton of well-known companies are using You can see a list of them here:

http://docs.jquery.com/Sites_Using_jQuery

As Ralph mentioned, the fact that Google hosts the jQuery library on their CDN is a good indicator of the safety level of the library.

In terms of viruses &amp; jQuery, you should be fine.

If you're concerned about downloading it from our site or using the Google hosted version, please feel free to download the code and create your own version of it. This will give you the best level of control over the build process:

http://docs.jquery.com/Downloading_jQuery#Subversion_.28SVN.29

We want you to enjoy your experience with jQuery and provide the best option available for your usage.