: is a type of program that is installed on your personal computers, with or without your permission, to collect information about users, their computers or their browsing habits.
Record all the activities you do without your noticing and send all this information to a remote user.
It is also capable of downloading other malicious programs from the Internet and installing them on your computer
Spyware works like adware, but it is generally a separate program that is installed without your noticing the moment you install another type of freeware program or application.
Trojan Horse
Trojan Horse : is not a virus.
It is a destructive program that apparently appears to be a genuine application. Unlike viruses, Trojans do not reproduce but can be just as destructive.
Trojans also open a backdoor - a secret entry point into your computer - that gives users or malicious programs access to your system, allowing confidential and personal information to be stolen.
Trojans are classified according to the methods they use to infect systems and the damage they can cause.
