排序方式: 共有50条查询结果,搜索用时 15 毫秒
1.
徐腾 《自动化与仪器仪表》2011,(4):174-175,178
随着网络攻击现象的增长和攻击技术手段的千变万化,计算机取证就是对能够为法庭接受的,足够可靠和有说服性的,存在于计算机和相关外设中的电子证据的确定、收集、保护、分析、归档以及法庭出示的过程。因此电子证据的计算机取证技术研究就显得十分重要,通过电子取证技术主动获取非法黑客的攻击行为并完整重建,可以准确有效地打击非法黑客。 相似文献
2.
Although quite recent as a forensic research domain, computer vision analysis of scenes is likely to become more and more important in the near future, thanks to its robustness to image alterations at the signal level, such as image compression and filtering. However, the experimental assessment of vision-based forensic algorithms is a particularly critical task, since they cannot be tested on massive amounts of data, and their performance can heavily depend on user skill. In this paper we investigate on the accuracy and reliability of a vision-based, user-supervised method for the estimation of the camera principal point, to be used in cropping and splicing detection. Results of an extensive experimental evaluation show how the estimation accuracy depends on perspective conditions as well as on the selected image features. Such evidence led us to define a novel visual feature, referred to as Minimum Vanishing Angle, which can be used to assess the reliability of the method. 相似文献
3.
4.
在结合了入侵检测系统和犯罪取证系统的基础上,提出了一种基于数据挖掘的入侵检测取证系统。当遭受入侵时,即起到防护作用,同时又实时地收集证据。数据挖掘技术分别应用于入侵检测部分和取证部分,使得检测模型的生成、分发自动化、智能化,提高了检测效率;使得取证系统数据分析速度得到了提高。 相似文献
5.
6.
7.
Ka Ho Ling Chun Wai Cheung Sau Wan Cheng Ling Cheng Song-Lin Li Peter D. Nichols Robert D. Ward Alastair Graham Paul Pui-Hay But 《Food chemistry》2008
The outbreak of keriorrhea caused by the wax ester-rich oilfish and escolar has become a frequent and worldwide concern. To help prevent such episodes, rapid detection of these fishes in the supply chain of the seafood industry and by food and health inspection agencies is essential. Through a combination of DNA, GC–MS and TLC analyses with reference to authentic samples, fish steaks of oilfish and escolar mislabeled as other species could be accurately identified. The TLC method developed is inexpensive and provides a reliable and importantly rapid identification within 30 min. 相似文献
8.
基于智能代理的动态取证技术研究 总被引:1,自引:0,他引:1
钟秀玉 《网络安全技术与应用》2005,(8):65-67
计算机静态取证存在证据的真实性、有效性和及时性问题。本文提出将取证技术结合到防火墙、入侵检测系统中,对所有可能的计算机犯罪行为进行实时的动态取证,重点研究了基于智能代理的动态取证系统模型、智能代理技术在动态取证中的应用以及动态取证中的数据获取,解决动态取证的实时性、智能性、可适应性和扩展性问题。 相似文献
9.
10.