Cloud computing offers users scalable platforms and low resource cost. At the same time, the off-site location of the resources of this service model makes it more vulnerable to certain types of adversarial actions. Cloud computing has not only gained major user base, but also, it has the features that attackers can leverage to remain anonymous and stealth. With convenient access to data and technology, cloud has turned into an attack platform among other utilization. This paper reports our study to show that cyber attackers heavily abuse the public cloud platforms to setup their attack environments and launch stealth attacks. The paper first reviews types of attacks launched through cloud environment. It then reports case studies through which the processes of launching cyber attacks using clouds are demonstrated.
Know Your Enemy: Stealth Configuration-Information Gathering in SDN
软件定义网络(Software Defined Networking,SDN)是一种旨在通过将网络逻辑与转发功能分离来提供高灵活性的网络架构。该行业已经广泛采用SDN,研究人员彻底分析了其漏洞,提出了提高其安全性的解决方案。然而,我们认为SDN的重要安全方面仍然没有得到研究。在本文中,我们提出了攻击者获取SDN网络知识的可能性。特别是,我们介绍了一种新的攻击,名为知道你的敌人(KYE),通过它的攻击者可以收集有关网络配置的重要信息。这些信息的范围从安全工具的配置(如网络扫描的攻击检测阈值)到一般网络策略(如QoS和网络虚拟化)。此外,我们还证明了攻击者可以以隐身的方式进行KYE攻击,即,而不会被发现我们强调,KYE攻击所利用的漏洞是SDN特有的,在传统网络中不存在。针对KYE攻击,我们还提出了一种基于网络流混淆的主动防御对策,这大大增加了成功攻击的复杂性。我们的解决方案提供可证明的安全保证,可根据所考虑的特定网络的需求进行定制
Stealthy Poisoning Attacks Bypass Defenses in Regression Settings
IBM Research Europe, Portal, First Floor Trinity Business School, Trinity College Dublin(IBM欧洲研究院,波特尔大楼,特里尼蒂商务学校,特里尼蒂学院都柏林);Imperial College London, South Kensington Campus(伦敦帝国理工学院,南肯辛顿校区);Universidad de Alcalá de Henares, Escuela Politécnica Superior(阿尔卡萨大学,工程技术学院);Defence Science and Technology Laboratory (DSTL), Porton Down, Salisbury(国防科学与技术实验室(DSTL),波特恩道,萨里)
Mind Your Heart: Stealthy Backdoor Attack on Dynamic Deep Neural Network in Edge Computing
Shanghai Jiao Tong University(上海交通大学);Beijing University of Posts and Telecommunications(北京邮电大学);Tsinghua University(清华大学);Zhongguancun Laboratory(中关村实验室);Nanyang Technological University(南洋理工大学);Alibaba Group(阿里巴巴集团)