Andrew, a bachelor student of Faulkner University, creates a gmail account. He uses ‘Faulkner’ as
the password for the gmail account. After a few days, he starts receiving a lot of e-mails stating
that his gmail account has been hacked. He also finds that some of his important mails have been
deleted by someone. Which of the following methods has the attacker used to crack Andrew’s
password?
Each correct answer represents a complete solution. Choose all that apply.

A.
Zero-day attack

B.
Social engineering

C.
Rainbow attack

D.
Buffer-overflow attack

E.
Brute force attack

F.
Dictionary-based attack

G.
Denial-of-service (DoS) attack

H.
Password guessing

Explanation: