论述目前对信息攻击所采取的主要的方法。
对信息攻击的方法可分为被动攻击和主动攻击两类。被动攻击是指一切窃密的攻击。①直接侦收。②截获信息。③合法窃取。④破译分析。⑤从遗弃的媒体中分析获取信息。主动攻击是指可以篡改信息的攻击。①窃取并干扰通信线路上的信息。②返回渗透。③线间插入。④非法冒充。⑤系统内部人员的窃密和毁坏系统数据、信息的活动等。
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