Virus infection from a Web page |
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EXPERT RESPONSE FROM: Ed Yakabovicz
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QUESTION POSED ON: 05 December 2001
How can you know ahead of time if a Web page is infected with a virus? Once you have a virus, how can you stop it from wrecking your computer?
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Host-based intrustion-detection systems such as Tripwire, Axent ITA and
Enterasys-Dragon Squire offer excellent support for the monitoring of Web pages
for malicious changes by hackers or virus-related attacks. These products
would notify and correct the problem by copying the correct Web page back to
the server.
Halting the spread of a virus should be done with the proper tools, such as
antivirus products. These products needs to be updated as the new
signatures are releasted from vendors, not at a later date. I recommend
purchasing a subscription to the sigature updates where the vendor sends
them and notifies you at the same time of a new virus. Otherwise, the manual
method is much too slow when new viruses are released.
Damage to your systems is only halted with the proper protective measures
and alerting software such as IDS or antivirus software properly
configured. Damage can only be measured by the amount of effort you place
into those systems and the importantance of maintance.
For more information on this topic, check out these other SearchSecurity.com resources:
Best Web Links: Intrusion detection
Best Web Links: Common vulnerabilities and prevention tactics
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