Trojan or Trojan horse is a non self replicating type of MALWARE which appears to perform a desirable function but instead facilitates unauthorised access to the user's computer system
it is a core hidden in a PROGRAM such as game or spreadsheet that looks safe to run but has hidden side effects
when such programs runs the Trojans destroys damages or alter the data in the background while it seems to function as per the users expectation
Trojan do not attempt to inject themselves into other files like a computer virus Trojan horse may steal information or haram their host computer systems
the Trojans main use drive by downloads or install via online games or internet driver application in order to reach targets computer
EG: beast ,sub 7.zeeus zero access rootkit etccc


how does Trojan spread??
=>Trojans are generally downloaded with some other programs or application torrents are also spread through email and exchange of discuss and information between the computers
Tarzan itself is a program that does not need a host to embed itself


HOPE it may help u

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