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 ______     _____    ______      ___              
|      \\  |  ___|| |      \\   / _ \\      ___   
|  --  //  | ||__   |  --  //  / //\ \\    /   || 
|  --  \\  | ||__   |  --  \\ |  ___  ||  | [] || 
|______//  |_____|| |______// |_||  |_||   \__ || 
`------`   `-----`  `------`  `-`   `-`     -|_|| 
                                             `-`

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發送短信 : Security requirements in E-commerce