浅析计算机犯罪取证与反取证

计算机犯罪取证主要围绕证据的获取和证据的分析。主要过程包括保护和勘查现场、获取物理数据、分析数据、追踪源头、提交结果等。计算机反取证就是删除或者隐藏入侵证据,使取证工作无效。反取证技术主要有数据擦除、数据隐藏等,数据擦除是最有效的反取证方法。从取证与反取证两方面分析计算机犯罪的特征,研究反取证技术的根源,可有效地保护国家信息网络安全,打击犯罪。     

地方政府公信力缺失的原因及其提升措施——以“钓鱼执法”事件为例

"钓鱼执法"事件中,执法机关采取诱骗的方式使原本没有违法意图的当事人从事了违法活动,严重损害了执法部门的形象,致使政府公信力大打折扣。可见,在现代公共生活中,政府行政权力如何有效运作,关系到政府良好形象的确立及其公信力的增强。以"钓鱼执法"事件为例,剖析一些地方政府公信力缺失的原因,探寻政府公信力有效提升的对策,已成为亟待解决的理论与现实问题。     

武汉地区汉族人群线粒体DNA Region V区9bp片段缺失多态性

目的 研究武汉地区汉族群体线粒体DNA RegionV区9bp片段缺失多态性.方法 PCR扩增后采用银染技术分离片段,检测武汉地区汉族群体线粒体DNA RegionV区9bp片段缺失的频率.结果 在武汉地区汉族239个无关个体中发现标准型、缺失型两种多态类型,9bp片段缺失频率为17.15％.结论 武汉地区汉族群体在DNA RegionV区9bp片段存在缺失多态性.     

Development of 30 InDel markers typing system and genetic analysis in five different Chinese populations

Allele frequencies of 30 InDel markers previously selected and validated for forensic purpose were assessed in 419 unrelated individuals originating from five different populations of Chinese Han, Chinese Hui, Uighur, Mongolian and Tibetan in P.R. China. Hardy–Weinberg equilibrium tests and linkage disequilibrium analysis were performed and the results showed that allele frequency distributions of the 30 InDel markers had meet the genetic equilibrium in all of the five populations and the InDel markers on same chromosome did not generate any linkage block. Analysis of molecular variance (AMOVA) indicated that genetic variation among the 5 studied populations represent only 4.00% of the total genetic diversity. We observed the cumulative power of discrimination (CPD) for each studied population was 0.99999999999841 in Chinese Han population, 0.99999999999690 in Chinese Hui population, 0.99999999999709 in Uighur population, 0.99999999999772 in Mongolian population and 0.99999999999854 in Tibetan population.     

The retention of personal information online: A call for international regulation of privacy law

New technologies permit online businesses to reduce expenses and increase efficiency by, for example, storing information in “the cloud”, engaging in online tracking and targeted advertising, location and tracking technologies, and biometrics. However, the potential for technology to facilitate long term retention of customers' personal information raises concerns about the competing right of individuals to the privacy of their personal information. Although the European Commission has recently released a proposal for regulation to “provide a data subject with the right to be forgotten and to erasure”, neither the OECD Privacy Guidelines nor the APEC Privacy Framework includes any requirement to delete personal information. While New Zealand includes a “limited retention principle” in the Privacy Act 1993, apart from one limited exception the privacy principles cannot be enforced in court. Taking New Zealand privacy law as an example, this paper examines the issue of retention of customer data, explains why this is a serious problem and argues that although it could be addressed by appropriate amendments to domestic laws, domestic privacy legislation may not be sufficient in an online environment. In the same way as other areas of law, such as the intellectual property regime, have turned to global regulatory standards which reflect the international nature of their subject matter, international privacy regulation should be the next stage for the information privacy regime.     

Characterization of deletions in the DYS385 flanking region and null alleles associated with AZFc microdeletions in Koreans

Eight DYS385 allele size discrepancies and six DYS448 null types were detected among 708 Korean men when results of three in-house multiplex short tandem repeat (STR) systems were compared. The systems included both ordinary and reduced size amplicons. Sequence analysis revealed deletion mutations at two sites upstream of the DYS385 core repeats and deletion of the entire DYS448 locus. At DYS385, allele size differences were one or two repeats and were dependent on the primer set used for polymerase chain reaction (PCR) amplification. Location of the primer target sequence in a flanking region of the STR, distal or proximal to the deletion, determined allele size. Two widely used commercial kits amplify DYS385 so as to include the mutable sites. Arrangement analysis of sequence tagged sites demonstrated that the deletion patterns at DYS448 (and DYS464) were associated with arrangements of the azoospermia factor c gene (AZFc). The DYS448 deletion appears relatively frequent in Asians.     

城市“三无”人员遗产处理若干问题探析--以公证实例为分析视角

近年来,国家对低收入群体的保障力度不断增大,作为城市低保对象的"三无"人员的财产也不断增加,但法律、行政法规及司法解释都没有对城市"三无"人员遗产处理作出专门规定,特别是随着我国城镇化进程的加快,"撤村改居"的政策使得农村户籍变为城镇户籍,伴随而来的就是农村五保户向城市"三无"人员的转变,城市"三无"人员死亡后的遗产处理成了新的难题。为了避免出现遗产无人继承而归公的情形,在立法滞后的情况下,公证行业应首先制定相应的指导意见,同时完善立法,明确城市"三无"人员遗产的处理方式,在《继承法》进行修改时应扩大法定继承人的范围,从而有效解决城市"三无"人员遗产处理的问题。     

人骨骼肌线粒体DNA4977片段缺失与年龄的相关性调查

目的 探讨人骨骼肌组织中线粒体DNA 4977bp片段的缺失情况及其与年龄的相关性.方法 收集105例不同年龄死者的骨骼肌组织,抽提MDT,通过CPR、琼脂糖紫外凝胶成像等技术,测定不同年龄组线粒体DNA 4977bp片段的缺失情况.结果 在105例样品中,不同年龄组(0～9、10～19、20～29、30～39、40～49、50～59、60～69、70～79、80～89、90～99岁)mtDNA4977片段缺失的频率分别为:0、0、0.003%、0.011%、0.015%、0.033%、0.038%、0.062%、0.069%、0.091%.结论 人骨骼肌线粒体DNA 4977bp片段的缺失频率随着年龄的增长而增高,各年龄组之间具有显著差异(P《0.01).该缺失片段的检测对于软组织年龄推测具有一定指导意义.     

社区警务建设论略

社区警务是和谐社会的时代主题在警务实践中的折射。社区警务体制以和谐警民关系为内核,要求警察主动依靠民众、服务社区、提前预防犯罪。当前的社区警务实践中还存在一些弊端,社区警务理念与实践脱节、体制上存在欠缺等。在社区警务建设的渐次推进过程中,须培育起全警警务理念、主动警务理念和民生警务理念,并着力解决警种联动、警社合作和目标管理考核问题。社区警务建设离不开警察职业素养和执法权威的内质支撑,须以民为本,型塑警察职业素养,提升警察责任心和使命感;培育社区民众的认同感和信任感,重建警察执法权威。     

InDel_typer30:用于中国5个主要民族DNA鉴定的多重PCR系统

目的采用插入/缺失(Insertion/Deletion,InDel)多态性遗传标记,建立一种可用于中国汉族、回族、维吾尔族、蒙古族、藏族5个主要民族法医DNA鉴定的多重PCR系统。方法采用人类基因组浏览器和dbSNP数据库筛选具有高度遗传多态性的人类常染色体InDel标记,采用Primer 3软件设计多重PCR引物,通过复合荧光标记系统建立多重PCR扩增体系,采用该体系对汉、回、维、蒙、藏5个民族进行多态性调查。结果成功建立了一个包含30个InDel位点和Amelogenin性别鉴定位点的复合荧光多重PCR扩增体系,命名为InDel_typer30。多态性调查显示这30个InDel位点在上述5个主要民族中均呈高度遗传多态性,平均期望杂合度分别为:0.464、0.460、0.453、0.466和0.469,平均个人识别率分别为:0.595、0.585、0.586、0.589和0.595。该系统在5个民族中的累积个人识别率(CDP)均达到0.999999999996以上。结论 InDel_typer30是一种适用于中国汉、回、维、蒙、藏5个主要民族的法医DNA鉴定系统。