What is a brute-force attack?

A brute-force attack is a method used in cryptography and computer security to crack passwords or encryption keys by systematically trying all possible combinations until the correct one is found. This approach does not rely on any specific knowledge of the target system but rather on the sheer computational power to try every possible combination. Brute-force attacks can be effective against weak passwords or small encryption keys, but they become increasingly impractical as the complexity of the password or key increases. They are often mitigated by implementing strong password policies, multi-factor authentication, and using encryption algorithms with sufficiently large key sizes.