![]() ![]() How dictionary attacks are conducted depends on whether the account, network or device the attacker is logging into is online or offline. ![]() Attackers use supporting programs, such as password dictionaries or other brute-force attack tools. Therefore, additional technology is typically required to speed up the process. Processing and testing all these passwords manually is not a practical approach. These lists aren't as extensive as those of other brute-force attacks, but they can become quite large. For example, hackers looking to launch a dictionary attack on a New York-based group of targets might look to test phrases like "knicksfan2020" or "newyorkknicks1234." Attackers incorporate words related to sports teams, monuments, cities, addresses and other regionally specific items when building their attack library dictionaries. These lists include predictable patterns that can vary by region. It operates under the assumption that users tend to pull from a basic list of passwords, such as "password," "123abc" and "123456." Ponemon Institute's latest research on the state of password practices in ITĪ dictionary attack uses a preselected library of words and phrases to guess possible passwords. Because a dictionary attack's guess attempts are limited to a preselected list, it is essentially impossible to crack nonpredictable passwords. Strong, randomized passwords cannot be easily predicted, and they are highly unlikely to be included in the predetermined password library. However, a brute-force attack can take a long time to produce results. In systems with strong password requirements, the brute-force method of attack, in which every possible combination of characters and spaces is tested up to a certain maximum length, can sometimes be effective. These attacks are usually unsuccessful against systems using multiple-word passwords and are also often unsuccessful against passwords made up of uppercase and lowercase letters and numbers in random combinations. A dictionary attack can also be used in an attempt to find the key necessary to decrypt an encrypted message or document.ĭictionary attacks work because many computer users and businesses insist on using ordinary words as passwords. A dictionary attack is a method of breaking into a password-protected computer, network or other IT resource by systematically entering every word in a dictionary as a password. ![]()
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