A more thorough explanation:

Definition: To open a lock, decode security information, bypass encryption or security devices, or hack a computer, network, server, or database with the intention of causing damage or disruption.

• He used a hairpin to crack the lock on the door.
• The hacker was able to crack the password and gain access to the company's confidential files.
• She found a way to crack the encryption on the DVD and make a copy of the movie.
• The cybercriminals attempted to crack the company's network and steal sensitive information.

These examples illustrate different ways in which the term "crack" can be used to refer to breaking into or bypassing security measures. In the first example, someone physically opens a lock without the proper key. In the second example, a hacker uses their skills to decode a password and gain unauthorized access to a computer system. In the third example, someone finds a way to bypass the encryption on a DVD and make an unauthorized copy. In the fourth example, cybercriminals attempt to hack into a company's network to steal information. All of these actions involve breaking through security measures in some way, which is what "crack" refers to in this context.