This paper focuses on the research of the problem and the prevention of the catastrophy which the T-DMB Emergency Alert Message would cause by changing the contents paralyze the national communication channels during the transferring process. The T-DMB Emergency Alert which is used when the Disaster occur. Using the notice support message of that program. Protecting not just vicious attacks but forceful channel transfer rights and sending coded no-public certification information coordination method along with video. Since suing T-DMB Emergency Alert Message could give the right to transfer channels and could be moved to a different channel. So in this case all T-DMB receivers are the targets of the vicious Emergency Alert Broadcast. This paper compares the current Emergency AlertBroadcast Service which T-DMB Broadcast and the One-Time PAD based message alert which traditional service model provides. Suggested research content could be applied to all other Emergency Alert casts of digital broadcasts and national broadcasting system.

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