Malicious individuals have discovered several methods to attack and defeat cryptosystems. It’s important that understand the threats posed by cryptographic attacks to minimize the risks to your network systems.
Identify one cryptographic attack and how you can protect against it.
Cryptographic attacks are a big concern for information security professionals. They can allow bad actors to steal data or even perform identity theft. In this post, we’ll explore one of the most common cryptographic attacks out there: dictionary attacks.
A dictionary attack is a type of brute force attack, which involves trying to guess the password from a list of words. The attacker tries to match the password against a list of words in a dictionary and uses software (or even just their own brain) to try all possible combinations until they find one that works.
This method can be used by anyone who has access to your login details or email address, so make sure you’re using strong passwords!
Brute Force Attack
A brute force attack is an attempt to guess a password by using many possible combinations. The goal of this type of attack is to bypass any access control mechanisms, such as two-factor authentication or other forms of authentication that require additional steps before gaining access.
Brute force attacks are often used in combination with other types of attacks such as phishing and social engineering. They work by exploiting human weakness and mistakes while they’re trying to log into your account or steal information from you (or both).
Rainbow tables are precomputed tables for reversing cryptographic hash functions. They’re used to find the password of a user with a given hash value, allowing you to crack passwords without having to reverse all the possible combinations of characters.
There are many types of rainbow tables (sometimes called “rainbow crackers”), but the most common ones are based on MD5 and SHA1, which were developed by Peter Gutmann in 1996 and 1994 respectively. These algorithms use symmetric key–based encryption (i.e., both parties have access) so that only one party can decrypt messages at any time; however, if you know your target’s public key then you can get access with just one round trip!
One of the most effective ways to crack passwords is a process called precomputed hashes. Rainbow tables are a type of precomputed hash and can be used to crack long hashes that use complex characters, like uppercase letters or numbers.
Rainbow Tables were originally created in the 1970s by various hackers who wanted to crack passwords on their systems without having to re-enter each one individually. They would take a large list of common passwords and prepend them with other random data so they could be stored in an easy-to-access location (like memory). When someone tried typing in one of these precomputed hashes into their system, it would return another string that matched what was stored on disk—and thus allowed them access!
We’ve covered several attacks that are commonly used by hackers, but there are many others out there. The best way to stay safe is to avoid opening suspicious emails or links and being overly cautious with your passwords, whether you’re using them on a computer or mobile device. If you do fall victim to an attack, make sure you have back-up plans for all your important files and documents before anything bad happens!
Reading Materials:
Li, Yu, Y., Lou, C., Guizani, N., & Wang, L. (2020). . IEEE Network, 34(6), 133139.
Chia, Heng, S.-H., Chin, J.-J., Tan, S.-Y., & Yau, W.-C. (2021). . Symmetry (Basel), 13(8), 1535.
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