When I have nothing to do, I would love to learn some more knowledge, I thought that this knowledge is not to use it, but also did not think it is time to be useful, some time ago, I learned some knowledge about threat defense, I think that this knowledge is really very interesting, I will use from work every day to learn some knowledge about threat defense, now can be said to be studying for a long time, I really used the threat defense knowledge, because we do most nearly project inside threat defense how many have some knowledge. It makes me work really is a lot easier, so I think I used to learn the threat defense knowledge is really very useful.