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A trojan, is a program put onto your system with something sneaky inside it, like a way for someone to take over your machine, turn it into a spam relay or forward virii to others.<br />
A back door is a more generic term, which could include trojans, but also could be some one adding an admin account on a machine, and at a later date using it to get back on the machine when they shouldn't. &nbsp;For instance a temporary or comtract employee putting their own home IP into an access control list so they can log into the system after they've left the company. &nbsp;
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A trojan, is a program put onto your system with something sneaky inside it, like a way for someone to take over your machine, turn it into a spam relay or forward virii to others.
A back door is a more generic term, which could include trojans, but also could be some one adding an admin account on a machine, and at a later date using it to get back on the machine when they shouldn't.  For instance a temporary or comtract employee putting their own home IP into an access control list so they can log into the system after they've left the company.  

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backdoor: a program which, when started somehow, allows remote acces to your system<br />
trojan: &nbsp; a program which contains &quot;malicious code&quot; (whatever it coud be) which is started when *you* call it, a program which camulflages itself as something other<br />
(hope my english is good enough to explain in short terms)
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backdoor: a program which, when started somehow, allows remote acces to your system
trojan:   a program which contains "malicious code" (whatever it coud be) which is started when *you* call it, a program which camulflages itself as something other
(hope my english is good enough to explain in short terms)

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What is the exact difference between Trojan horse and back doors ?<br />
Is a back door actually a type of trojan horse ?<br />
Can i used anti-trojan to detect also back doors ?
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What is the exact difference between Trojan horse and back doors ?
Is a back door actually a type of trojan horse ?
Can i used anti-trojan to detect also back doors ?

Difference between backdoors and Trojan Horse

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.