网络隐私面临诸多安全威胁和侵害，间谍软件和Cookie 是主要因素。分析了间谍软件对网络隐私的侵害，研究了Cookie 泄密的现状，提出了能有效保障网络隐私安全的防御技术和措施。关键词：网络隐私；信息安全；间谍软件；CookieAbstract：Internet privacy suffered much security threats and intrusion, the main cause is Spyware and Cookie. It is analyzed that Spyware intrudes Internet privacy, and studied that Cookie discloses Internet privacy. Authors also put forward an effective defense technologies and measures that are used to protect Internet privacy.Key words：Internet privacy；Information security； Spyware；Cookie