Cody Suspects That His Company Has Been the Subject of an Attack

Multiple Choice

Cody suspects that his company has been the subject of an attack after reports from multiple users that they are missing files. He examines the logs and sees where it appears that the user logged in successfully for each of the users in question and that the strong encryption protocol was enforced and used each time. Which of the following may have occurred?

A) Packet sniffing
B) Dictionary attack
C) Brute force
D) Social engineering