Since unwanted persons or even opponents may break into the conference system to babble the secrets out, the system is desired to be of high safety.

• 在视频会议中，人们总是希望在相互交流的时候不受到干扰，信息不外泄，不允许无关人员擅自闯入会议之中，复制资料或者进行破坏，从而造成不该有的损失。