Which of the following is true of phishing?

A) It is the process of stealing personal data from a victim by convincing him to disclose information.
B) It is useful in monitoring the web traffic into and out of an unsecured computer network.
C) It involves the use of several thousand computers to launch malicious attacks that can cripple websites.
D) It uses small pieces of code inserted into a browser that track an Internet user's activity and transmit the data to third parties.

A