The Internet has played an important part in the education field. The distance learning system, learning online network, even the training programs of foreign countries through the Internet were no longer new in our country today. Students can learn at any time Groove and Exchange directly with teachers over the Internet, saving the cost of saving time. But in parallel with the benefits, the Internet still exists the harm due to some bad parts. Some hackers have written sections of the destructive programs that call with the name of the virus, trojan, spyware, ... and spread on the net, just access the Internet then these programs will infiltrate your computer. Worse than they can steal data, leakage of information.
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