IoT forensics: Exploiting unexplored log records from the HIKVISION file system

CCTV surveillance systems are IoT products that can be found almost everywhere. Their digital forensic analysis often plays a key role in solving crimes. However, it is common for these devices to use proprietary file systems, which frequently hinders a complete examination. HIKVISION is a well-known manufacturer of such devices that typically ships its products with its proprietary file system. The HIKVISION file system has been analyzed before but that research has focused on the recovery of video footage. In this paper, the HIKVISION file system is being revisited regarding the log records it stores. More specifically, these log records are thoroughly examined to uncover both their structure and meaning. These unexplored pieces of evidence remain unexploited by major commercial forensic software, yet they can contain critical information for an investigation. To further assist digital forensic examiners with their analysis, a Python utility, namely the Hikvision Log Analyzer, was developed as part of this study that can automate part of the process.     

Psychopathy among condemned capital murderers

Psychopathy is an important forensic mental health construct. Despite this importance, the research base of psychopathy among individuals convicted of capital murder is limited. Archival data were collected from a sample of 636 persons convicted of capital murder and sentenced to death in the State of California. Psychopathy was assessed using the Psychopathy Checklist – Revised (PCL-R) instrument. Data on criminal careers and other behavioral disorders were also extracted. The sample mean PCL-R total score was 23.31 (SD = 9.92) and one-third of individuals in this sample were considered clinically psychopathic with PCL-R total scores of 30 or greater. Factor analytic examination yielded support for four facets: affective, interpersonal, lifestyle, and antisocial. Criterion validity findings revealed positive correlations of psychopathy scores with Antisocial Personality Disorder (ρ = 0.72), Conduct Disorder (ρ = 0.46), sexual sadism (ρ = 0.24), Oppositional Defiant Disorder (ρ = 0.20), ADHD (ρ = 0.15), arrest charges (r = 0.56), prison sentences (r = 0.53), and age of arrest onset (r = −0.57). Individuals convicted of capital murder and sentenced to death reflect heterogeneity in psychopathy with some individuals exhibiting pronounced psychopathic features.     

Accuracy of comparison decisions by forensic firearms examiners

This black box study assessed the performance of forensic firearms examiners in the United States. It involved three different types of firearms and 173 volunteers who performed a total of 8640 comparisons of both bullets and cartridge cases. The overall false-positive error rate was estimated as 0.656% and 0.933% for bullets and cartridge cases, respectively, while the rate of false negatives was estimated as 2.87% and 1.87% for bullets and cartridge cases, respectively. The majority of errors were made by a limited number of examiners. Because chi-square tests of independence strongly suggest that error probabilities are not the same for each examiner, these are maximum-likelihood estimates based on the beta-binomial probability model and do not depend on an assumption of equal examiner-specific error rates. Corresponding 95% confidence intervals are (0.305%, 1.42%) and (0.548%, 1.57%) for false positives for bullets and cartridge cases, respectively, and (1.89%, 4.26%) and (1.16%, 2.99%) for false negatives for bullets and cartridge cases, respectively. The results of this study are consistent with prior studies, despite its comprehensive design and challenging specimens.     

整体性治理模式的组织创新

创新政府治理模式,形成有效的管理与协调机制一直是政府和学界非常关注的问题,也是各国政府改革的共同方向。政府治理模式的创新必然导致组织的创新。在西方,随着信息化、数字化技术的普遍使用,已经兴起了与信息时代相适应的政府治理新模式,即整体性治理,它主要是针对新公共管理带来的碎片化、空心化政府等一系列问题而提出,强调整体与合作,不再围绕特定功能建立组织,而是以结果和目标进行组织设计与创新。整体性治理模式的组织创新主要体现在以协同为特征的组织形态、以结果为导向的组织目标和以整合为核心的运作机制,同时强调官僚制的组织结构基础。这对于中国的行政改革具有非常重要的借鉴意义。     

浅析建瓯市服务业发展的现状及对策

发展服务业是科学发展观的本质要求,对于促进经济结构优化升级,提高居民生活质量和生活水平,转变经济增长方式,实现经济、社会及生态和谐发展,具有十分重要的意义.文章以建瓯市第二次全国经济普查结果和近三年税收情况为依据,在分析建瓯市服务业结构现状及存在问题的基础上,提出发展思路.     

中日两国在东亚区域内贸易中地位的变化及其影响

东亚区域内贸易比重的迅速上升是现阶段东亚贸易发展的一个重要特征。中国和日本作为东亚区域内两个最大的经济体,两国在东亚区域内贸易中的地位和影响力的变动对相互之间的经济合作以及区域内经济合作模式的选择,具有十分重大的影响。本文在分析东亚区域内贸易发展现状的基础上,从中间产品和最终产品的贸易结构与贸易竞争压力的角度,分析了中日两国在东亚区域内贸易中地位的变动及其影响。     

国际海盗问题与中国海上通道安全

作为世界贸易大国和能源进口大国,中国的发展越来越依赖于海外,海上通道安全对保障中国国家安全的重要性日益凸显。海盗作为一种国际犯罪行为,严重影响国际海上航运安全,也对中国海上战略通道安全构成现实威胁。海盗治理成为关系到中国海上通道安全的重大问题,必须采取积极有效措施加以解决。为此,我们必须进一步完善国内反海盗立法和反海盗机制;充分发挥联合国的作用,建立打击海盗、维护海上通道安全的长效机制;积极推动反海盗的国际和地区合作;增强防御海盗的力量和意识,重视远洋海军建设;坚持标本兼治,积极推进海盗所属国或地区的和平、发展和稳定。     

Family judges in the city of Buenos Aires: a view from within

This paper summarises the main findings of a study of gender differences in the values and attitudes of family judges carried out in Buenos Aires, Argentina. The study explored how men and women judges understood their profession and its requirements, their representation of the ideal family judge, their motivation to become family judges, the way they experienced the power they wield, and their opinion on the supposed contributions women judges might bring to the family judiciary. The study's findings were analysed in terms of Gilligan's ethic of justice/ethic of care approach. Two key results emerged. Firstly, there were no clear-cut differences between men and women in terms of their adherence to an ethic of justice or of care respectively. Secondly, distinct gender differences were apparent in the way women judges approached decision-making.     

A comparison of three shoe sole impression lifting methods at high substrate temperatures

Footwear impressions are a common form of evidence found at crime scenes, and the accurate recovery and recording of such impressions is critical for shoe sole comparison and identification. The lifting of shoe sole impressions from hot surfaces (>30°C/86°F) and in hot environments has received little attention in the literature, particularly in relation to the recovery of class and randomly acquired characteristics (RACs) required for accurate comparisons. This study addressed this knowledge gap by comparing the performance of three common impression lifters (gelatin, adhesive, and vinyl static cling film) at recovering shoe sole impressions in dust from hot flooring substrates. Dry origin dust shoe sole impressions were made on ceramic tile, galvanized metal, and laminated wood flooring using a shoe that possessed two RACs and five class characteristics present on the sole. Substrates were left in direct full sun for five hours during a summer day prior to lifting. Performance was measured by the proportion of RACs and class characteristics visible in each lifted impression. Results demonstrated that the vinyl static cling film tested performed poorly across all substrates, particularly for metal (23.8% marks recovered), including notable shrinkage of the lifted impression. In contrast, adhesive (~96% marks recovered over all substrates), and to a lesser extent gelatin (~85%), lifts were highly successful on hot substrates. These data suggest that adhesive lifts can consistently and accurately recover shoe sole impressions from hot substrates. This study contributes critical information for crime scene examiners to improve and expand evidence recovery in hot environments.