目前,国内外很多厂商推出了Linux系统中的终端检测响应(Endpoint Detection and Response,EDR)系统,为云平台、物联网、大数据计算等基础设施提供全面的安全检测和防护服务。但是,针对EDR文件防护功能的绕过攻击能够帮助恶意行为规避监...目前,国内外很多厂商推出了Linux系统中的终端检测响应(Endpoint Detection and Response,EDR)系统,为云平台、物联网、大数据计算等基础设施提供全面的安全检测和防护服务。但是,针对EDR文件防护功能的绕过攻击能够帮助恶意行为规避监控,造成严重的系统和数据安全风险。针对开源和商业闭源的Linux EDR系统,首先,阐述了文件防护功能的底层实现机制,对其核心技术原理进行了分析;其次,重点梳理了4种现有公开的文件防护绕过技术,提出了3种尚未公开的绕过技术,并且总结提炼为3种攻击类型;再次,基于上述绕过技术编写了验证工具,通过测试证明了这些技术方法对于部分Linux EDR系统的文件防护绕过能力;最后,给出了相应的安全防护建议。展开更多
Host selection behaviors of parasitic wasps are a comoplex and hierarchy process,which includes habitat preference, potential host location and host location. In the field,whether a parasitic wasp successfully finds i...Host selection behaviors of parasitic wasps are a comoplex and hierarchy process,which includes habitat preference, potential host location and host location. In the field,whether a parasitic wasp successfully finds its host or not is determined by many facors such as climatic conditions, host density, chemical environment, physiological states and ex-priences.This paper surveys the recent progress in the study on host selection behaviors of parasitic wasps. The following aspects are included: 1. host searching, oviposition and post-oviposi-tion behaviors of the parasitoids and the cues employed, and 2- behavioral variations of the wasps and associated factors including genotype, physiological states, experiences and learn-ing. Prospective application of parasitic wasps in pest insect control is discussed.展开更多
文摘Host selection behaviors of parasitic wasps are a comoplex and hierarchy process,which includes habitat preference, potential host location and host location. In the field,whether a parasitic wasp successfully finds its host or not is determined by many facors such as climatic conditions, host density, chemical environment, physiological states and ex-priences.This paper surveys the recent progress in the study on host selection behaviors of parasitic wasps. The following aspects are included: 1. host searching, oviposition and post-oviposi-tion behaviors of the parasitoids and the cues employed, and 2- behavioral variations of the wasps and associated factors including genotype, physiological states, experiences and learn-ing. Prospective application of parasitic wasps in pest insect control is discussed.
