COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which password attack takes advantage of a predefined list of words?
A
Birthday attack
B
Dictionary attack
C
Brute-force attack
D
Replay attack
Explanation: 

Detailed explanation-1: -A dictionary attack uses a word list: a predefined list of words, and each word in the list is hashed. If the cracking software matches the hash output from the dictionary attack to the password hash, the attacker has successfully identified the original password.

Detailed explanation-2: -Explanation: Hybrid attacks are based on dictionary attack techniques. In such types of attacks, the dictionary attack is mixed with some numerals and special symbols.

Detailed explanation-3: -The advantage of a dictionary attack is that it is simple and fast, as it only needs to compare the hashed password with the hashed words in the dictionary. The disadvantage is that it can miss complex or uncommon passwords that are not in the dictionary, or that use different hashing algorithms.

Detailed explanation-4: -A type of brute-force password attack, a dictionary attack is based on a list of commonly used words and phrases, as well as often-used passwords. To avoid having to crack a long list of possible passwords, attackers narrow down the list to what’s known as dictionary words.

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