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Users questions:
Experts answer: backdoor also known as Trojan horses, its use is lurking in the computer, hackers engaged in collecting information or easy access to the action. After the procedure, and the biggest difference between computer viruses, backdoor programs is not necessarily replicate the action, that is, not necessarily back doors "infect" other computers. After The door is a log method, which not only has the security settings to bypass the system, but also to defeat the system all the enhanced security settings. The back door from the simple to the exotic, there are many types. May be just a simple back door to create a new account, or take over the account of a rarely used; complex after Doors (including horse) may bypass the system security certification and security of access to the system. For example, a login program, when you enter a specific password, you will be able to access the system administrator privileges to.
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