The topic seems to be quite stupid but it is true when you are purchasing a new Laptop,ipod,mobile just have a check at it because it may contain some pre installed viruses which might affect your device and your investment.The major source of virus are the low cost Chinese products.
The recent infections may be accidental, but security experts say they point out an avenue of attack that could be exploited by hackers.
"We'll probably see a steady increase over time," said Zulfikar Ramzan, a computer security researcher at Symantec Corp. "The hackers are still in a bit of a testing period — they're trying to figure out if it's really worth it." Thousands of people whose antivirus software isn't up to date may have been infected by new products without even knowing it, experts warn. And even protective software may not be enough
Consumers can protect themselves from most factory-loaded infections by running an antivirus program and keeping it up to date. The software checks for known viruses and suspicious behaviors that indicate an attack by malicious code — whether from a download or a gadget attached to the PC via USB cable
Legal experts say manufacturing infections could become a big headache for retailers that sell infected devices and the companies that make them, if customers can demonstrate they were harmed by the viruses.