Hiya,

ClamAV is in the news. Today heise.de published an article about web.de
and there new use of ClamAV. That article (in German) can be found at:

http://www.heise.de/newsticker/data/hob-04.12.03-000/

For all non-Germans of you I made a quick translation of the German
text. Please, I do not share any of those opinions, I repeat, I do not
share any of those opinions. I just thought, you should know what
heise.de is writing.

-----snip-----

web.de want to protect email users against malicious code

web.de[1] has added virus protection to it freemail service for all
its customers. As the company stated, all incoming emails will be
tested against viruses, worms and trojans on user request. Infected
attachments will be removed or moved to a spam folder called
"unwanted".

In a short test by heise online the new service did not recognize all
viruses and worms. Supprised by this result, we asked the company,
what software they use. web.de uses two tools for virus scans:
outgoing mails are checked by F-Secure-Scanner[2], incoming mails are
scanned by the Open-Source-Software Clam AntiVirus[3]. While F-Secure
was able to stand a test in c't [German Computer Magazine by heise]
[4], the alpha version 0.54 of ClamAV failed as a result of its low
recognition rate of viruses and worms.

To its customers web.de explained today that the scanner provides an
effective protection of their mail account and PCs. This looks delusive
after the c't test. Therefore heise online asked the anti virus expert
Andreas Marx[5] of university Magdeburg to re-check the version 0.65 of
ClamAV supposably used by web.de.

The results: Of 716 widely spread Viruses from the current
"wildlist"[6] ClamAV only recognised 242, that is a quote of
33,8%. "You cannot call the virus protection of ClamAV as such", Marx
commented the result. Every commercial virus scanner gets a
recognition rate of 99 to 100 percent in these tests. Because ClamAV
does not include a code emulation it is currently useless against
polymorphic viruses. In the test it recognised 0,3 percent of the
70,000 tested files. For comparison: scanners from Symantec, Network
Associates/McAfee, Trend Micro and other companies do find all 70,000
infected files. An OLE2 engine is also missing, so the scanner misses
practically all macro viruses.

It was noticeable that ClamAV often triggered false positive: of 5000
clean files that he checked with ClamAV, more than 50 were detected as
virus infected, Marx explained. He attributed these false positives to
the bad quality of the signature database of ClamAV.

Experts like Marx expressly point out that the Open-Source-Project
ClamAV is currently in alpha stage and should not be used in
production environments as the only virus scanner. web.de is doing the
developers of ClamAv and there own customers a disservice. The company
itself argues that they have resulted ver good recognition rates with
internal tests.

[1] http://www.web.de/
[2] http://www.f-secure.com/
[3] http://clamav.elektrapro.com/
[4] http://www.heise.de/security/artikel/39978/0
[5] http://www.av-test.de/
[6] http://www.wildlist.org/

----snip--------------

Alex

-- 
Alex Pleiner
zeitform Internet Dienste         Fraunhoferstrasse 5
                                  64283 Darmstadt, Germany
http://www.zeitform.de            Tel.: +49 (0)6151 155-635
mailto:[EMAIL PROTECTED]        Fax:  +49 (0)6151 155-634
GnuPG/PGP Key-ID: 0x613C21EA


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