入侵攻击模拟验证系统作为提高电网安全性的一种代表性工具,通过自动模拟从内外部对网络、系统和应用程序发起的广泛攻击,实现模拟攻击,评估系统安全能力。然而,针对电力网络中主要面临的长期且多阶段的高级持续攻击,现存入侵攻击模拟...入侵攻击模拟验证系统作为提高电网安全性的一种代表性工具,通过自动模拟从内外部对网络、系统和应用程序发起的广泛攻击,实现模拟攻击,评估系统安全能力。然而,针对电力网络中主要面临的长期且多阶段的高级持续攻击,现存入侵攻击模拟验证系统的设计却普遍存在一定的局限性,不能有效地进行全面模拟和防御。针对上述问题,本文提出了一种面向电力网络高级持续攻击防御的自动化入侵攻击模拟验证系统设计方案,该方案采用虚拟化与流量模拟技术实现了对电力网络的实战仿真,并在仿真环境中,通过对比防护前后攻击的效果来对高级持续攻击的防护措施进行有效性验证。本文首先基于虚拟化技术实现了针对高级持续攻击的基础网络与组件的模拟,其次采用流量模拟技术实现了系统中电网业务流量和高级持续攻击流量的双重模拟,最后搭建了面向高级持续攻击的实战场景,实现了防护措施的有效性验证模块。经试验表明,本文所提方案能够较好地进行电力网络攻防实验和防御长期多阶段的高级持续攻击。As a representative tool to improve the security of power grids, the Intrusion Attack Simulation Verification System automatically simulates a wide range of attacks on networks, systems, and applications from inside and outside, realizes simulated attacks, and evaluates system security capabilities. However, in view of the long-term and multi-stage advanced persistent attacks mainly faced in power networks, the design of the existing intrusion attack simulation and verification system has some limitations, and it cannot be effectively simulated and defended. In order to solve the above problems, this paper proposes a design scheme for the automatic intrusion attack simulation and verification system for advanced continuous attack defense of power network, which uses virtualization and traffic simulation technology to realize the actual combat simulation of power network, and verifies the effectiveness of the protection measures of advanced continuous attack by comparing the effect of attack before and after protection in the simulation environment. In this paper, the simulation of the basic network and components for advanced persistent attacks is realized based on virtualization technology, and secondly, the dual simulation of power grid service traffic and advanced persistent attack traffic in the system is realized by using traffic simulation technology, and finally the actual combat scenario for advanced persistent attacks is built, and the effectiveness verification module of protective measures is realized. Experiments show that the proposed scheme can be better for power network attack and defense experiments and defense against long-term and multi-stage advanced persistent attacks.展开更多
针对传统入侵检测工具无法检测高级持续威胁(Advanced Persistent Threat,APT)攻击和威胁警报疲劳问题,文章提出一种基于攻击图的APT检测方法 ADBAG(APT Detection Based on Attack Graph),该方法根据网络拓扑、漏洞报告等信息生成攻击...针对传统入侵检测工具无法检测高级持续威胁(Advanced Persistent Threat,APT)攻击和威胁警报疲劳问题,文章提出一种基于攻击图的APT检测方法 ADBAG(APT Detection Based on Attack Graph),该方法根据网络拓扑、漏洞报告等信息生成攻击图,并利用攻击图对攻击者行为进行预先分析,有效解决了威胁警报疲劳问题。文章结合ATT&CK(Adversarial Tactics,Techniques and Common Knowledge)模型和APT攻击三相检测模型,设计了一种缺失路径匹配评分算法,从攻击全局角度分析和检测APT攻击。同时,设计了基于灰名单的多攻击实体关联方法,以保证生成的APT攻击证据链的准确性。在公开数据集上进行实验,实验结果表明,ADBAG可以有效检测APT攻击,并能够检测基于零日漏洞的APT攻击,进一步定位攻击影响范围。展开更多
文摘入侵攻击模拟验证系统作为提高电网安全性的一种代表性工具,通过自动模拟从内外部对网络、系统和应用程序发起的广泛攻击,实现模拟攻击,评估系统安全能力。然而,针对电力网络中主要面临的长期且多阶段的高级持续攻击,现存入侵攻击模拟验证系统的设计却普遍存在一定的局限性,不能有效地进行全面模拟和防御。针对上述问题,本文提出了一种面向电力网络高级持续攻击防御的自动化入侵攻击模拟验证系统设计方案,该方案采用虚拟化与流量模拟技术实现了对电力网络的实战仿真,并在仿真环境中,通过对比防护前后攻击的效果来对高级持续攻击的防护措施进行有效性验证。本文首先基于虚拟化技术实现了针对高级持续攻击的基础网络与组件的模拟,其次采用流量模拟技术实现了系统中电网业务流量和高级持续攻击流量的双重模拟,最后搭建了面向高级持续攻击的实战场景,实现了防护措施的有效性验证模块。经试验表明,本文所提方案能够较好地进行电力网络攻防实验和防御长期多阶段的高级持续攻击。As a representative tool to improve the security of power grids, the Intrusion Attack Simulation Verification System automatically simulates a wide range of attacks on networks, systems, and applications from inside and outside, realizes simulated attacks, and evaluates system security capabilities. However, in view of the long-term and multi-stage advanced persistent attacks mainly faced in power networks, the design of the existing intrusion attack simulation and verification system has some limitations, and it cannot be effectively simulated and defended. In order to solve the above problems, this paper proposes a design scheme for the automatic intrusion attack simulation and verification system for advanced continuous attack defense of power network, which uses virtualization and traffic simulation technology to realize the actual combat simulation of power network, and verifies the effectiveness of the protection measures of advanced continuous attack by comparing the effect of attack before and after protection in the simulation environment. In this paper, the simulation of the basic network and components for advanced persistent attacks is realized based on virtualization technology, and secondly, the dual simulation of power grid service traffic and advanced persistent attack traffic in the system is realized by using traffic simulation technology, and finally the actual combat scenario for advanced persistent attacks is built, and the effectiveness verification module of protective measures is realized. Experiments show that the proposed scheme can be better for power network attack and defense experiments and defense against long-term and multi-stage advanced persistent attacks.
文摘针对传统入侵检测工具无法检测高级持续威胁(Advanced Persistent Threat,APT)攻击和威胁警报疲劳问题,文章提出一种基于攻击图的APT检测方法 ADBAG(APT Detection Based on Attack Graph),该方法根据网络拓扑、漏洞报告等信息生成攻击图,并利用攻击图对攻击者行为进行预先分析,有效解决了威胁警报疲劳问题。文章结合ATT&CK(Adversarial Tactics,Techniques and Common Knowledge)模型和APT攻击三相检测模型,设计了一种缺失路径匹配评分算法,从攻击全局角度分析和检测APT攻击。同时,设计了基于灰名单的多攻击实体关联方法,以保证生成的APT攻击证据链的准确性。在公开数据集上进行实验,实验结果表明,ADBAG可以有效检测APT攻击,并能够检测基于零日漏洞的APT攻击,进一步定位攻击影响范围。
