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If cyber war is still a wild west, it is obvious that citizens will become victims. Our culture, economy, education, health care, livelihood and communication are closely connected with the Internet. If an enemy country wants to use more "traditional" attack methods (perhaps terrorist bomb attacks or the release of a chemical agent) to play the greatest role, Why not start with blackmail software attacks, freeze people's bank accounts, close hospitals, make people unable to contact emergency workers, and ensure that people cannot communicate with their families during an inevitable period of chaos?……饭都吃不饱啊。Link: https://pan.baidu.com/s/1gggerkv Password: v2l6LINUX: Linux uses the variable tcp_max_syn_backlog to define the maximum half number of connections that the backlog queue can hold. In Redhat 7.3, the value of this variable defaults to 256, which is far from enough. A low-intensity SYN attack can fill up the half-connection queue. We can modify the value of this variable with the following command:这时，陈启拿出一个超薄的粉色笔记本和一个最新款流行手机。Public interface Targetable {"Bus and subway all-pass one-day ticket"