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In this paper, we proposed roles and responsibilities of cyber intelligence in cyber operations. In particular, we focused on the roles and responsibilities of cyber intelligence on each phase of cyber operations. Cyber operations are activities related to defense, assurance, and attack to achieve objectives in or through cyberspace. While cyber operation is conducting, cyber intelligence must properly support cyber commander and units for ensuring cyberspace intelligence superiority. Cyber intelligence is a cyber-discipline that exploits a number of information collection and analysis approaches to provide direction and decision to cyber commander and cyber operation units. This is a key role in both cyber-attack and cyber defense. We know that the branch of information and communications conducts cyber operations in cyberspace. But we don’t know well that the cyber intelligence is more in charge of the policy, strategic, and tactics in cyber operations. It is collected information requested from cyber command and units, and is disseminated information to department related to cyber operations. The cyber intelligence is a key factor in cyber operation cycle.