The reason Johnny is overloaded is because that the hackers are constantly trying to login as the root administrator, so the hacker is constantly trying to crack Johnny's password.
Also, if Johnny is down, it is probably confusing Cody. For example:
CODY: User wants to signup.
JOHNNY: This website has been hacked.
CODY: Huh?
JOHNNY: This website has been hacked.
CODY: What!?
JOHNNY: This website has been hacked.
CODY: Error.