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For the convenience of the experiment, we directly use the functions in libc.so.6 as the attack functions to be executed. This is a C program runtime in Linux, which holds a large number of available functions and contains system ("/bin/sh"). Therefore, we can use ROPgadget tool to obtain the code fragments that we can exploit, and use pwntool to exploit the vulnerabilities of vulnerable programs, thus achieving our attack purpose, that is, running system ("/bin/sh"). In order to facilitate the subsequent use of ROPgadget tool to find gadget and attack, it is necessary to copy the libc.so.6 file to the operation directory. First, use the "ldd" command to view the source directory, and then use the "cp" command to copy it to the operation directory.他说的对，这次，她选的不是他，只是一个答题的陌生人。　　那年在里斯本，他们初遇，一见钟情。回到德国的Eva再难忘记Luis，于是她与男友分手，孤身去葡萄牙寻找Luis。两人再见面时，爱情的花火就此绽放。但有时候，美好的开始并不意味着欢喜的结局。Old Gold's WifeData Poisoning Attack: This involves inputting antagonistic training data into the classifier. The most common type of attack we observe is model skew. Attackers pollute training data in this way, making classifiers tilt to their preferences when classifying good data and bad data. The second attack we have observed in practice is feedback weaponization, which attempts to abuse the feedback mechanism to manipulate the system to misclassify good content as abuse (e.g. Competitor's content or part of retaliatory attacks).Of the above three stages, the attack is undoubtedly the most important one. For DDOS attacks, when the attack occurs, the best defense measure is to quickly filter the attack packets on the premise of early detection of the attack to ensure the access of legitimate users. At present, for DDOS attacks, security companies mainly adopt traffic cleaning methods. A common flow cleaning architecture is shown in Figure 1.