True, a Trojan horse is a program that appears to be useful but actually contains malicious code that, when run, causes harm.
A malicious application or piece of code known as a "Trojan horse" imitates legitimate software but is actually capable of controlling your computer. A Trojan is made to steal from your network or data, disrupt business processes, or commit other nefarious acts.
A Trojan Horse is malware that impersonates reliable apps or software (Trojan). Attackers have access to all actions that a legitimate user could perform once they are within the network, including exporting files, editing data, deleting files, and otherwise changing the contents of the device.
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