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12. Don't buy too many stocks, preferably not more than five. You don't have that much energy to defend them.A fundamental and universal problem closely related to this aspect is related to the use of open DNS parser to launch DDoS attacks against Switzerland, an anti-spam organization. The open parser does not validate the IP address of the sender of the packet before sending back the DNS reply. Therefore, after the attacker deceives the victim's IP address, he can send a large amount of attack traffic to the victim, and the ratio of attack traffic to request traffic reaches 100: 1. DNS amplification attacks such as these have recently been used by hacker activists, blackmailers and blacklisted website hosts with great success.隔日，凌云关逃跑了几个俘虏，指挥使金二被玄武公好一顿训斥，罚没了战功。中年男子米建山与七年前的情人孔琳旧情复燃，当他们又一次面对“离婚”这一敏感话题时，孔琳突然神秘死亡，与孔琳惊人相似的孪生姐姐孔莲突然回国，与案情有关的人接连遇害，疑犯越来越多，究竟谁，不在犯罪现场……苏岸高声喝道：越王就封，尔等何人，速速报上名来。(a), the problem recurrence:没办法，三线都是大敌。