A Trojan horse or Trojan is a type of malware that is often disguised as legitimate software

A Trojan horse or Trojan is a type of malware that is often disguised as legitimate software. Trojans can be employed by cyber-thieves and hackers trying to gain access to users’ systems. Users are typically tricked by some form of social engineering into loading and executing Trojans on their systems. Once activated, Trojans can enable cyber-criminals to spy on you, steal your sensitive data, and gain backdoor access to your system. These actions can include:

Deleting data
Blocking data
Modifying data
Copying data
Disrupting the performance of computers or computer networks
Unlike computer viruses and worms, Trojans are not able to self-replicate.
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