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How to Foil the Trojan.VUNDO

February 3rd, 2009
by John Eley

My PC suffered an attack recently that threatened to get out of hand. Would my credit card details and other sensitive information be stolen? Luckily I managed to fix the problem quickly.

The main symptom of the attack was the inability to use Windows Updates. Also the main antivirus software that I use (Norton antivirus) appeared to know that the trojan.VUNDO was present. It reported a fix, but almost immediately this was overturned and the problem reverted.

If the PC is cut off from security updates from the operating system provider (Microsoft) it will then become vulnerable to further more serious attacks. A criminal who knows you have been cut off from help from the software vendor support knows you are defenceless and that sooner or later he will be able to get to sensitive information, such as passwords and credit card details. Your computer could be a goldmine for the criminal.

It is essential that when security updates become disabled you fix this problem as soon as possible. Do not postpone this even if the computer is operating normally in other ways. If you choose to ignore it the results could be disastrous.

The problem with my pc also stopped me from manually downloading updates. This severely limits what you can do. You are totally cut off from help from your software vendor.

An independent way to fix the problem was required. I went to the Windows forums and discussion groups and used their search facilities to find a solution. I quickly found a report that was relevent. There was a software package recommended that could fix this problem. This was Malwarebytes’ Anti-Malware 1.31 and it can be found at http://www.malwarebytes.org/. It fixed the problem beautifully and I strongly recomend it.

There are paid versions as well. Updates are brought out every few days and so they are clearly responding to new threats rapidly.

Malware, including viruses, trojans and worms, is under a state of continual development by criminals, whose objective is to basically rake off money from the unsuspecting Internet community. It is good to know comapnies like Malwarebytes are out there fighting them. They certainly knew how to undo the vundo attack I experienced!

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