Over the past few weeks is seems just abut every time of business has been hit with a DDoS or Distributed Denial of Service Attack, during which hikers overwhelm the organizations' servers so that no one can get through. Not good if you are in the business of making split-second trades, approving credit cards for busy travelers, or making life and death decisions in the hospital emergency room.
There is no quick fix or easy answer. DDoS is one among the new perils of business that can require a quick assembly of your crisis management team.
For an understanding of how these attacks work and what motivate them read Download DDOS Security e-Forex by Dick Pirozzolo