Identify a true statement aboutTrojan horses.

a. They lead consumers to counterfeit Web sites designed to trick them into divulging personal data.
b.They are used by organizations to test the security of information systems.
c. Theyinvolve the use of Short Message Service (SMS) texting for phishing.
d. They spy on users byrecording keystrokes and transmitting them to a server operated by a third party.

d. They spy on users byrecording keystrokes and transmitting them to a server operated by a third party.
A Trojan horse is a program in which malicious code is hidden inside a seemingly harmless program. The program’s harmful payload might be designed to enable the hacker to destroy hard drives, corrupt files, control the computer remotely, launch attacks against other computers, steal passwords or Social Security numbers, or spy on users by recording keystrokes and transmitting them to a server operated by a third party.