a brute force attack that tries to deliver emails to an Internet service providers or organizations using names generated from a dictionary
a method in which an attacker runs millions of passwords against a database until a match is eventually found
a method of breaking a cipher (or its key) by trying a list of likely possiblities (e
a successful match with the resulting syndrome from iterating the DES algorithm based on a known plaintext value ( all ZEROs ), and a suspected key ( from a dictionary of common passwords)
a technique to attempt a break-in by trying every word in a dictionary as a password
A cyphertext-only attack in which the attacker uses a dictionary of highly probable keys to guess the true key.
In the context of spam, in a dictionary attack, a large number of delivery attempts of test messages to email addresses are made. These email addresses are generated based on words from a dictionary. This is done to compile a list of deliverable email addresses. Dictionary attacks are also used as a means of obtaining passwords to gain unauthorised access to computer systems.
A dictionary attack is one which uses what is known as a 'brute-force' technique to gain access to a system typically by successively trying all the words or data in a large list.
A dictionary attacker uses automated tools to try to send a message to every letter/number combination imaginable at your domain (
[email protected],
[email protected],
[email protected], etc.), hoping that some of these messages will reach real users. This eats network resources, and, in extreme cases, can crash your mail servers, preventing legitimate mail from reaching your users. When properly configured, trimMail Inbox stops these attacks at the front door, dramatically reducing bandwidth, cpu, memory, and storage demands downstream.
An attack that uses a brute-force technique of successively trying all the words in some large, exhaustive list for the purpose of finding good email addresses for a given domain.
An attack in which an attacker tries known words in the dictionary and numerous common password names in an attempt to "guess" the password. Because most users prefer easily remembered passwords, dictionary attacks are often a shortcut to finding a password in significantly less time than key search (brute force) attacks would take to find the same password. See also key search attack.
An attack aimed at discovering user passwords by going through all dictionary words, proper nouns, names, combinations of words and one digit, etc. One possible defense against such attacks is contriving passwords composed of two unrelated words plus non-alphanumeric characters (e.g. tulip/equine). _____________________________________________________________________________
An attack where the attacker triies the obvious keys first
An attack that uses all the words and phrases in a dictionary to try to crack a password or key. A dictionary attack uses a predefined list of works compared to a brute force attack that tries all possible combinations.
An attack against a cryptographic system involving precomputating values to build a dictionary. For example, in a password system, one might keep a dictionary mapping plaintext, ciphertext pairs to keys for a single plaintext that frequently occurs. A large enough key space can render this attack useless. In a password system, there are similar dictionary attacks, which are somewhat alleviated by salt. The end result is that, once the attacker knows the salt, he or she can do a 'Crack'-style dictionary attack. Crack-style attacks can be avoided to some degree by making the password verifier computationally expensive to compute (or, select strong random passwords, or don't use a password-based system).
Similar to a password cracking program, this type of spam attack methodically sends emails in an alphabetic order to a mail server, in the hopes of getting some correct.
An attack in which a series of words is used to try and discover a short piece of data such as a password. See also brute force attack.
A type of spam program that bombards a mail server with millions of alphabetically generated email addresses in the hope that some addresses will be guessed correctly.
As its name suggests, these attacks involve trying a host of words from a list to determine someone's password. Attackers don't manually try all combinations but have tools that automatically attempt to identify someone's password.
A common attack on passwords. the attacker creates a dictionary of many possible passwords and their corresponding verifiers. Through some means, the attacker then obtains the verifier corresponding to the target password, and obtains the target password by looking up the verifier in the dictionary.
A common method of guessing passwords, using words from a dictionary.
A calculated brute force attack to reveal a password by trying obvious and logical combinations of words.
Passwords are usually hashed using publicly available algorithms. A dictionary attack involves creating a list of millions of potential passwords in a hashed form and looking up the hash to find the original password. Combining numerals and punctuation marks with letters massively increases the potential number of passwords, making dictionary attacks much harder.
An attack that tries all of the phrases or words in a dictionary, in an effort to crack a password or a key. A dictionary attack uses a predefined list of words compared to a brute force attack that tries all possible combinations.
An attempt to guess a password by systematically trying every word in a dictionary as the password. This attack is usually automated, using a dictionary of the hacker's choosing, which may include both ordinary words and jargon, names, and slang.
A brute force attack that tries passwords and or keys from a precompiled list of values. This is often done as a precomputation attack.
A method of guessing a user's password or PIN by trying every word in the dictionary until successful.
In cryptanalysis and computer security, a dictionary attack is a technique for defeating a cipher or authentication mechanism by trying to determine its decryption key or passphrase by searching a large number of possibilities. In contrast with a brute force attack, where all possibilities are searched through exhaustively, a dictionary attack only tries possibilities which are most likely to succeed, typically derived from a list of words in a dictionary. Generally, dictionary attacks succeed because most people have a tendency to choose passwords which are easy to remember, and typically choose words taken from their native language.