It can be said is usually every day to play mobile phone, but I threat defense on this knowledge is really know too little, I can say that this is threat defense do not know what is, I see colleagues kept watching something on that day, I asked him up, he that is he is about mobile phone threat defense knowledge, he think we usually use mobile phone is many, know more about threat defense’s knowledge is really necessary, and he had this knowledge is very interested in, heard him say this, I think or, I also learn some knowledge of Defense Threat, in this way, if I met this thing, also know how to solve.