Which type of security threat can be transferred through email and is used to gain sensitive information by recording the keystrokes of the email recipient?

Which type of security threat can be transferred through email and is used to gain sensitive information by recording the keystrokes of the email recipient?

• adware
• Trojan
• worm
• virus
• grayware
  

  Explanation: Adware does not record keystrokes. A worm self-replicates across the network. A Trojan appears to be a legitimate program while carrying malware, and grayware is a general term for software that may be malware.