1. Trojan Horse :
Trojan Horse is also a type of
malware which uses false and fake name for mislead users from its true intent and executing them. Trojan Horses generally install on the system as legitimate and useful software that can give unauthorized access and control of the system to the hackers. Back orifice, Rootkit and Beast Trojan are some of the common Trojan horse which is more harmful.
2. Adware :
Adware is not exactly malicious but they do breach privacy of the users for malicious purpose. They display ads (a pop up window appear) on computer’s desktop or inside individual programs. They mainly come attached with free to use software, thus main source of revenue for such developers. They basically monitor your interests and display relevant ads. An attacker may embed malicious code inside the software and adware can monitor your system activities and can even compromise your machine.
Difference between Trojan Horse and Adware :