“Hackers can attack your host's file, rewriting the file to send you to a fraudulent site. Virus writers also use the host's file to block access to anti-virus companies. CNET’s Rob Vamosi says ‘beware.’ ”Most home users don't even know there is a host file.
AOL and other net access programs tend to drop them in without so much as a mention. Virus scanners may not (usually do not look for changes other than a virus signature.
This short video tells you what you need to know, but assumes you'll know what to do.
http://news.zdnet.com/1607-2-5718931-2.asx?PSDir=ad_msnlivemeeting&videoName=5w0518ungracioushosts&NumClips=1
http://news.zdnet.com/2036-2_22-5718931.html
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