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This article discusses each type of attack in turn, provides specific examples, and discusses possible mitigation methods.冬天，天寒地冻，天黑得也早。1. In communication, stars, as the "OpinionLeader" of the target audience group, can have personal influence on the target group. People who are active in the interpersonal communication network and often provide information, opinions, or suggestions to others and exert personal influence on others are called "opinion leaders". They can often use their professional knowledge and persuasion ability to influence others. Their charisma is characterized by dominance, self-confidence and strong persuasion ability. Stars are people who choose to have influence in the public domain and have high credibility. They are usually stars, experts, singers or researchers in a certain field. In order to achieve good results in mass communication, we must first attach importance to the existence of these opinion leaders.U Unemployment rate;渔舟唱晚，响彻彭蠡之滨。胡宗宪此时说不出的悲愤。来上海考现代舞团的任飞儿和刚从美国留学回来的IT精英裔天，阴差阳错地住进了白领公寓同一套房间，开始了异性合租的生活。