Entanglement is a fundamental concept in quantum information theory, considered by many to be a quintessential characteristic that distinguishes quantum systems from their classical counterparts. Physical phenomenon that occurs when pairs or groups of bit are generated, interact, or share spatial proximity in ways such that the quantum state of each particle cannot be described independently of the state of the other(s), even when the particles are separated by a large distance. With proper usage of these essential resources like quantum, online security is going to be established when the quantum computers, network, internet, communication is put in place.