dictionary attack

noun

, Computers.

1. an attempt to break into a password-protected computer or computer system with a software program that successively tries all the words in a large dictionary or other word list.
2. an attempt by a spammer to obtain a list of valid email addresses by testing possible usernames in combination with a domain name.

dictionary attack

noun

1. an attempt to hack into a computer or network by submitting every word in a dictionary as a possible password

Word History and Origins

Origin of dictionary attack¹

First recorded in 1985–90