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

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發送短信 : Defending against distributed denial of service (DDoS) attack