Which among the following statements is incorrect?

1. Trojan looks like legitimate software.
2. Some Trojans create backdoors to give malicious users access to the system.
3. Trojan self-replicate and infects other files.
4. Trojan spreads through user interaction such as opening an email attachment or downloading and executing a file from the Internet.

Question

Which among the following statements is incorrect?

1. Trojan looks like legitimate software.
2. Some Trojans create backdoors to give malicious users access to the system.
3. Trojan self-replicate and infects other files.
4. Trojan spreads through user interaction such as opening an email attachment or downloading and executing a file from the Internet.

Accepted Answer

**Solution:**

1. A Trojan horse is a type of malware disguised as legitimate software to trick users into executing it.

2. Trojans can create backdoors, allowing unauthorized access to the system.

3. Trojans do not self-replicate or infect other files; this behavior is typical of viruses, not Trojans.

4. Trojans spread through user interaction, such as opening infected email attachments or downloading malicious files.

Therefore, the incorrect statement is that Trojans self-replicate and infect other files.

**Answer:** Statement 3 is incorrect.

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