Clam AntiVirus Posted by Tyson , 08 May 2011 at 20:08, in Labels: AntiVirus

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.


Features

ClamAV includes a number of utilities: a command-line scanner, automatic database updater and a scalable multi-threaded daemon, running on an anti-virus engine from a shared library.

The application also features a Milter interface for sendmail and on-demand scanning. It has support for Zip, RAR, Tar, Gzip, Bzip2, OLE2, Cabinet, CHM, BinHex, SIS formats, most mail file formats, ELF executables and Portable Executable (PE) files compressed with UPX, FSG, Petite, NsPack, wwpack32, MEW, Upack and obfuscated with SUE, Y0da Cryptor. It also supports many document formats, including Microsoft Office, HTML, Rich Text Format(RTF) and Portable Document Format (PDF).

The ClamAV virus database is updated several times each day and as of 21 August 2010 contained 818,106 virus signatures.

Effectiveness

ClamAV was included in comparative tests against other antivirus products. In the 2008 AV-Test it rated: on-demand: very poor, false positives: poor, on-access: poor, response time: very good, rootkits: very poor.

ClamAV is currently tested daily in comparative tests against other antivirus products on ShadowServer. In 2010 ShadowServer tested over 22 million samples against ClamAV and numerous other antivirus products. Out of the 22 million samples tested ClamAV scored 76.64% ranking 9 out of 19, a higher rating than some much more established competitors.

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