So I guess I have two questions: first, how did Trojan.Agent (or whatever else I might have had) accomplish the disabling of Internet Explorer? And second, why can't Internet Explorer's diagnosis feature figure out that Internet Explorer isn't working? It doesn't seem to be a very helpful feature if it can access the Internet and say everything is ok, but the program that it is supposedly diagnosing can't access the Internet and says that everything is screwed up.
How does a virus do this?
Started by
Tom Valois
, Dec 24 2009 06:14 PM
#1
Posted 24 December 2009 - 06:14 PM
So I guess I have two questions: first, how did Trojan.Agent (or whatever else I might have had) accomplish the disabling of Internet Explorer? And second, why can't Internet Explorer's diagnosis feature figure out that Internet Explorer isn't working? It doesn't seem to be a very helpful feature if it can access the Internet and say everything is ok, but the program that it is supposedly diagnosing can't access the Internet and says that everything is screwed up.
#2
Posted 25 December 2009 - 02:31 PM
Without seeing your logs I can't be sure but my guess is that your bug installed a proxy server on your PC then told IE to use it to get to the internet. (Proxy Servers are used at big companies and by speed up services. They store copies of popular webpages and cut down on the amount of traffic to the internet and make it look like the internet is much faster since the page only passes through high capacity local network connections and not through the much narrower internet connection.) Your antivirus managed to remove the proxy server but did not tell IE to stop looking to the proxyserver which was no longer there. When you reset IE to defaults you removed the ''use proxy server xyz' option and fixed your problem. As far as IE was concerned everything was working correctly.
You could have fixed it by IE, Tools, Internet Options, Connections, Lan Settings where you will see boxes to check to "Use a proxy server for your LAN" and a place where the address of the proxy server can be typed in. By unchecking the box IE would start using the regular internet connection instead of the proxy.
Ron
You could have fixed it by IE, Tools, Internet Options, Connections, Lan Settings where you will see boxes to check to "Use a proxy server for your LAN" and a place where the address of the proxy server can be typed in. By unchecking the box IE would start using the regular internet connection instead of the proxy.
Ron
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