ClamAV is an open source (GPL) antivirus engine designed for detecting Trojans, viruses, malware and other malicious threats. It is the de facto standard for mail gateway scanning. It provides a high performance mutli-threaded scanning daemon, command line utilities for on demand file scanning, and an intelligent tool for automatic signature updates. The core ClamAV library provides numerous file format detection mechanisms, file unpacking support, archive support, and multiple signature languages for detecting threats. The core ClamAV library is utilized in Immunet 3.0, powered by ClamAV, which is a fast, fully featured Desktop AV solution for Windows.
Latest ClamAV® stable release is: 0.97.4
Windows Antivirus - Immunet 3.0, powered by ClamAV (Learn more) 
ClamAV Virus Databases:
main.cvd ver. 54 released on 11 Oct 2011 10:34 :0400 (sig count: 1044387)
daily.cvd ver. 14944 released on 21 May 2012 13:57 :0400 (sig count: 174200)
bytecode.cvd ver. 182 released on 21 May 2012 15:31 :0400 (sig count: 40)
safebrowsing.cvd ver. 38821 released on 21 May 2012 17:45 :0400 (sig count: 1285550)
There are no Release Candidates currently planned.
April 9th, 2012 Posted by - webmaster
The VRT is looking for an Intern to assist with the ClamAV and Razorback projects. If you are a C coder, we’d like to hear from you.
We are looking for resumes sent to research [at] sourcefire.com. Please let us know that you are interested in the Intern position with the VRT, and that you saw the blog post here on the ClamAV blog!
March 21st, 2012 Posted by - webmaster
The ClamAuth kernel extension enables ClamAV to provide on-access scanning for Mac OS X 10.5 and later.
The current version works in a passive mode only – ClamAV will log the detection but won’t block access to the infected file. However, it’s possible to perform special actions (eg. quarantine files) with the VirusEvent directive of clamd.
Usage
——-
1. Run ClamAuth_load to load the kernel extension (you can edit the script (Read more...)
March 19th, 2012 Posted by - webmaster
ClamAV 0.97.4 includes minor bugfixes, detection improvements and
initial support for on-access scanning under Mac OS X (see
contrib/ClamAuth).
This update is recommended for all users.
Wed Feb 29 18:35:45 CET 2012 (acab)
----------------------------------- * libclamav/bytecode.c: reset to BYTECODE_AUTO mode at db reload so that we don't fail to re-enable or re-disable it again (Read more...)
February 28th, 2012 Posted by - webmaster
Then we want to talk to you! While you can look up the different openings that the Vulnerability Research Team (VRT) has, what you won’t see if why you should choose Sourcefire for your next job. This is why I love working here, in no particular order:
1. The people. We come from different backgrounds and bring a wealth of talent and knowledge to the table. Most of us were using computers pre-Internet before (Read more...)
January 27th, 2012 Posted by - webmaster
Open Source Fact and Fiction: Sourcefire Stays True To Its Roots
Alan Shimel writes a great article about our new product FireAMP, and it’s roots, not only with ClamAV but many other OpenSource technologies. It’s a quick read, but really shows what we are trying to do here at Sourcefire and how OpenSource is not only the foundation of our products, but really, is baked into everything that we do here.
