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According to CNCERT sampling monitoring data, in February 2018, the three types of key reflection attacks launched by reflection servers involved a total of 2,252,085 reflection servers, including 1,804,807 domestic reflection servers and 447,278 overseas reflection servers. The memcached reflection server used for reflection attacks launched 45,412 reflection servers, accounting for 2.0%, including 16,594 domestic reflection servers and 28,818 overseas reflection servers. There are 32,693 reflection servers using NTP reflection to launch reflection attacks, accounting for 1.5%, including 3,806 domestic reflection servers and 28,887 overseas reflection servers. There are 2,173,980 reflection servers using SSDP reflection to launch reflection attacks, accounting for 96.5%, including 1,784,407 domestic reflection servers and 389,573 overseas reflection servers.《枪声背后》讲述1949年5月，人民解放军解放上海之际，中共上海地下党负责人叶正龙获悉，国民党特务组织企图炸毁我上海沪江发电厂，此企图被国民党特务组织命名为“萤火虫计划”。为了粉碎萤火虫计划，上海市公安局侦察科在科长叶正龙的带领下，和国民党特务组织斗智斗勇，展开了一系列的侦破工作，并积极设计建设地下应急发电组。在工作过程中，出现了国民党特务组织蓄谋制造的破坏事件。经过一番努力，叶正龙不负众望，最终揪出了隐藏在我上海市公安局内部，代号为“老鹰”的国民党特务，并粉碎了国民党特务组织的“萤火虫计划”。Public Object next () {Three implementation classes:5-3, 7-2, both deadThe process of solving crimes: