Some of the things on the computer, I really know is very few, but this time I also really is the right place for it, because I found the US company that is to do a project, will still have to use the threat defense, I before is the threat defense is not known, but this time I still for this project is also dedicated to studying the threat of defense, there is no thought this threat defense is really good, and now I will always have in use, especially our company is now also really is more and more people are using this threat defense.