Targeted Attacks

I do not know now what is the Targeted Attacks, although it is every day I met this knowledge, but I really have no intention to learn this knowledge, I recently found work encountered about Targeted Attacks’s knowledge is really too much, I was in think, or I will learn some knowledge about Targeted Attacks, if I can learn some words, then working at the moment, I can relax ah, even if it is not working, I feel some learning, also can increase your knowledge, is really very good, so I decided to use work time to learn some knowledge of Attacks Targeted, but in my opinion it is very useful.