A trojan is a program pretending to be like useful software, while its actual strategy...

ATrojan horse (Trojan)is atype of malware disguised as legitimate software. Once installed, a Trojan can:

Create backdoors for attackersto access a system.

Steal sensitive datasuch as passwords, banking details, and personal files.

Disable antivirus softwareor delete important system files.

Unlike viruses and worms,Trojans do not replicate themselvesbut rely onsocial engineering techniquesto trick users into installing them.

References:McAfee Institute CCII Cyber Threat Intelligence, Cyber Forensics Up and Running​.