A Brute Force Attack is a way to obtain access to encrypted or password/passcode protected data or systems, when no other way of accessing the data is available. The method used relies on repeated, rapid attempts to guess the encryption key or password in use. This is done by dedicated hardware or software based systems that can quickly try every possible key or password. A system with a 4-digit pin code has a maximum of 10,000 possible pin codes that need to be tried. Most systems guard against brute force attacks by restricting the number of guesses allowed, and by increasing the time delay between failed attempts.