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Have you ever had this problem with your computer. Every time you try to open your Internet Explorer to surf the Internet, an error message reads "Failed to get data for 'ad' ", the next thing you see is a dreaded illegal operation box and your Internet Explorer gets shut down.
When navigating around My Computer or Control Panels, you get this message although you still can navigate the controls, despite the illegal message error.
This is an example of a Trojan. Trojans are not viruses, these are malware that are usually hidden in a.exe file that you download online.
Here's are examples of how it can happen.
1) You click on a.exe file that came from an email address you recognized.
2) You went to some sites and downloaded some.exe files that looked like something else you were looking for.
3) You click on a "Click Here!" link in someones AOL instant messenger profile and it ended up throwing about 3 Trojan Dropper viruses on my computer. Your virus checker can catch them but not be able to remove, quarantine or delete them without impairing your operating system.
Sometime after doing a complete system scan and one may assume that the virus checker caught it. About a week later, the symptoms can resurface.
If your out of ideas and your anti virus program is unable to help, before contemplating formatting your hard disk and reinstalling the OS, try using a focused Trojan Remover software. Trojans are not Viruses, so you need a specialized Trojan Remover tool that is constantly updated to combat the multi variations of a single Trojan.
Take for example, the Trojan.Vundo Trojan. This little guy will display multiple pop ups on your Internet Explorer browser, and you will end up seeing things that you may not want to see. There are many variants of this trojan and frequently updated anti-trojan anti malware & spyware tools will be able to detect and clean them quickly and easily. This will save one time and avoid the time consuming process of having to reinstall the entire WinXP/ OS & Drivers.
