Research on Insider Threat Detection Method Based on Variational Autoencoding

電腦學刊 ◽  
2021 ◽  
Vol 32 (4) ◽  
pp. 201-210
Author(s):  
Zhenjiang Zhang Zhenjiang Zhang ◽  
Yang Zhang Zhenjiang Zhang

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Chunrui Zhang ◽  
Shen Wang ◽  
Dechen Zhan ◽  
Tingyue Yu ◽  
Tiangang Wang ◽  
...  

Recent studies have highlighted that insider threats are more destructive than external network threats. Despite many research studies on this, the spatial heterogeneity and sample imbalance of input features still limit the effectiveness of existing machine learning-based detection methods. To solve this problem, we proposed a supervised insider threat detection method based on ensemble learning and self-supervised learning. Moreover, we propose an entity representation method based on TF-IDF to improve the detection effect. Experimental results show that the proposed method can effectively detect malicious sessions in CERT4.2 and CERT6.2 datasets, where the AUCs are 99.2% and 95.3% in the best case.


Author(s):  
Mohammed Nasser Al-mhiqani ◽  
Rabiah Ahmad ◽  
Zaheera Zainal Abidin ◽  
Warusia Yassin ◽  
Aslinda Hassan ◽  
...  

<p>Insider threat is a significant challenge in cybersecurity. In comparison with outside attackers, inside attackers have more privileges and legitimate access to information and facilities that can cause considerable damage to an organization. Most organizations that implement traditional cybersecurity techniques, such as intrusion detection systems, fail to detect insider threats given the lack of extensive knowledge on insider behavior patterns. However, a sophisticated method is necessary for an in-depth understanding of insider activities that the insider performs in the organization. In this study, we propose a new conceptual method for insider threat detection on the basis of the behaviors of an insider. In addition, gated recurrent unit neural network will be explored further to enhance the insider threat detector. This method will identify the optimal behavioral pattern of insider actions.</p>


2021 ◽  
Vol 65 (9) ◽  
Author(s):  
Ying Zhao ◽  
Kui Yang ◽  
Siming Chen ◽  
Zhuo Zhang ◽  
Xin Huang ◽  
...  

Author(s):  
Bhavani Thuraisingham ◽  
Mohammad Mehedy Masud ◽  
Pallabi Parveen ◽  
Latifur Khan

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