Well,
you can (and should) always worry about the security of any computer
connected
to the Internet. At the moment, however, you are probably less likely
to get a
virus from infected e-mail or untrusted Web sites with standard e-mail
clients and
Web browsers that come with the Linux systems than you would with those
that come
with the average Microsoft Windows system.
The most commonly cited warnings to back up that statement come in a
report
from the United States Computer Emergency Readiness Team (CERT) regarding
a
vulnerability in Microsoft Internet Explorer (www.kb.cert.org/vuls/id/713878):
There are a number of significant vulnerabilities
in technologies relating to
the IE domain/zone security model, the DHTML object model, MIME type
determination and ActiveX. It is possible to reduce exposure to these
vulnerabilities
by using a different Web browser, especially when browsing untrusted
sites. Such a decision may, however, reduce the functionality of sites
that
require IE-specific features such as DHTML, VBScript and ActiveX. Note,
that
using a different Web browser will not remove IE from a Windows system,
and
other programs may invoke IE, the WebBrowser ActiveX control, or the
HTML
rendering engine (MSHTML).
US-CERT Vulnerability Note VU#713878
While the note also recommends keeping up with patches from Microsoft
to reduce
your risks, it seems that the only real solutions are to disable active
scripting and
ActiveX, use plain text e-mail, and do not visit sites you do not trust
with Internet
Explorer. In other words, use a browser that disables insecure features
included in
Microsoft products.
This announcement apparently caused quite a run on the Mozilla.org site
to download
a Mozilla or Firefox browser and related e-mail client. Versions of
those software
projects run on Windows and Mac OS X, as well as on Linux. Many believe
that browsers
such as Mozilla are inherently more secure because they don’t
allow non-standard Web
features that might do such things as automatically download unrequested
software without your knowledge.
Want
to know more about this topic or have proof? just click the below sites!
http://www.theregister.co.uk/2003/10/06/linux_vs_windows_viruses/
http://librenix.com/?inode=21