Entanglement is a quantum phenomenon where two or more particles become so deeply linked that the state of one instantly determines the state of the other, no matter how far apart they are. In cybersecurity, entanglement is significant for quantum cryptography, as it enables the creation of secure communication channels. If an eavesdropper tries to intercept the entangled particles, the disturbance is immediately detectable, making quantum key distribution (QKD) highly secure. This property is expected to revolutionize secure communications, offering unprecedented protection against interception and hacking attempts, and is a key focus in the emerging field of quantum cybersecurity.