Recovering from a Trojan Horse or Virus

 Recovering from a Trojan Horse or Virus

It can happen to anyone. Considering the vast number of viruses and Trojan horses traversing the Internet at any given moment, it’s amazing it doesn’t happen to everyone. Hindsight may dictate that you could have done a better job of protecting yourself, but that does little to help you out of your current predicament. Once you know that your machine is infected with a Trojan Horse or virus (or if your machine is exhibiting unexpected behavior and you suspect that something is wrong), what can you do?

Best practice before it happens 

1. A backup  will save Data, Time and money. In some cases fighting the virus and Trojan can cost more that replacing a machine. Acroniss and symantic are good choices from making full backup
2. Most machines do not come with a recovery CD and needs to be created right after you purchase the machine 
3. Keep all software that will be needed to recover the machine in a safe location.

 1. Call IT support
If you have an IT support department at your disposal, notify them immediately and follow their instructions. ( If not call Spider Networks Inc)
2. Disconnect your computer from the Internet
Depending on what type of Trojan horse or virus you have, intruders may have access to your personal information and may even be using your computer to attack other computers. You can stop this activity by turning off your Internet connection. The best way to accomplish this is to physically disconnect your cable or phone line, but you can also simply “disable” your network connection.
3. Back up your important files
At this point it is a good idea to take the time to back up your files. If possible, compile all of your photos, documents, Internet favorites, etc., and burn them onto a CD or DVD or save them to some other external storage device. It is vital to note that these files cannot be trusted since they are still potentially infected. (Actually, it’s good practice to back up your files on a regular basis so that if they do get infected, you might have an uninfected set you can restore.)
4. Scan your machine
Since your computer (including its operating system) may be infected with a malicious program, it is safest to scan the machine from a live CD (or “rescue” CD) rather than a previously installed antivirus program. Many antivirus products provide this functionality. Another alternative is to use a web-based virus removal service, which some antivirus software vendors offer (try searching on “online virus scan”).
The next best action is to install an antivirus program from an uncontaminated source such as a CD-ROM. If you don’t have one, there are many to choose from, but all of them should provide the tools you need.