Question

explain trojan horse virus

Answer 1

Trojan horse is a virus that spy your PC and delete system memory files secretly in the background and sells your information to someone else.

Answer 2

Trogen horse virus spy on host machine(victim system) and send all Info to hacker system.
Trojans are generally spread by some form of  Social Engineering, for example where a user is duped into executing an e-mail attachment disguised to be unsuspicious, (e.g., a routine form to be filled in), or by  drive by download. Although their payload can be anything, many modern forms act as a backdoor, contacting a controller which can then have unauthorized access to the affected computer.Trojans may allow an attacker to access users' personal information such as banking information, passwords, or personal identity (IP address). It can infect other devices connected to the network.Ransomware attacks are often carried out using a Trojan