Part 4/8:
Consider the scenario of Alice wanting to send a confidential message to Bob. By incorporating quantum technology into their communication, they can utilize entangled qubits to create a unique encryption key. If a hacker, let's call her Eve, attempts to intercept and steal this key, her intrusion is detectable immediately. This immediate notification ensures that the integrity of Alice and Bob's communication remains intact, showcasing how the quantum internet can significantly bolster security.