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930 X 4.6% = 42.78According to statistics, SYN attack is the most common and easily used attack method among all hacker attacks. I believe many people still remember the attack on YAHOO website in 2000. At that time, hackers used simple and effective SYN attacks. Some network worms cooperated with SYN attacks to cause greater damage. This paper introduces the basic principle, tools and detection methods of SYN attack, and comprehensively discusses the prevention technology of SYN attack.匈奴人？韩信显然没想到蒯彻给出这样的回答。中岛健人将主演10月开播的日本台土22《ドロ刑 ｰ警視庁捜査三課-》。这是中岛首次主演连续剧，也是首次挑战刑警角色。远藤宪一共演。改编自《周刊少年JUMP》连载的福田秀的原作漫画《ドロ刑》，中岛饰演新人刑警・斑目勉，远藤宪一饰演传说的大小偷・烟鸦。讲述了两人组成搭档携手挑战各种疑难事件并成长的故事。The observer mode defines a one-to-many dependency relationship, allowing multiple observer objects to monitor a certain topic object at the same time. When the state of this topic object changes, all observer objects will be notified so that they can automatically update their behaviors. The specific structure diagram is as follows:人生太长，有些事，别那么骄傲，哪有不跑偏的。