A malicious user has gained access to several user accounts by guessing their password. The malicious user was able to guess passwords using a list of commonly used phrases and words. Which of the following terms best describes this type of attack?
A Dictionary Attack uses a list of preset words, phrases and commonly used passwords.
In cryptanalysis and computer security, a dictionary attack is an attack using a restricted subset of a keyspace to defeat a cipher or authentication mechanism by trying to determine its decryption key or passphrase, sometimes trying thousands or millions of likely possibilities often obtained from lists of past security breaches.