Brute-force attack - GCSE Computer Science Definition

A brute-force attack in computer science is a method used by attackers to gain unauthorised access to data, such as passwords or encryption keys, by trying every possible combination until the correct one is found. It relies on the sheer computing power to test a large number of potential passwords or keys systematically and exhaustively. Although this approach is straightforward and does not require any clever tactics or knowledge of the system being attacked, it can be very time-consuming and resource-intensive, especially with strong passwords or encryption. Students studying GCSE Computer Science should understand that brute-force attacks highlight the importance of using complex passwords and implementing security measures like account lockouts and captchas to protect against these types of intrusions.