Netinfo Security ›› 2017, Vol. 17 ›› Issue (9): 143-146.doi: 10.3969/j.issn.1671-1122.2017.09.033

• Orginal Article • Previous Articles     Next Articles

Human-machine Behavior Recognition for CAPTCHA Based on Gradient Boosting Model

Zhiyou OUYANG1,2(), Xiaokui SUN1,2   

  1. 1. Institute of Advanced Technology, Nanjing University of Posts and Telecommunications, Nanjing Jiangsu 210023, China
    2. School of Automation, Nanjing University of Posts and Telecommunications, Nanjing Jiangsu 210023, China
  • Received:2017-08-01 Online:2017-09-20 Published:2020-05-12

Abstract:

By using the abnormal means to simulate human behavior operation and bypass the CAPTCHA system, hacking tools can then sent a large batch of requests to the background system to achieved the hacking goals, which may bring to big risk of delay response of system operation, or even produce huge economic losses. However, the traditional verification code method has shortcomings in both ease of use and man-machine recognition rate. In this paper, a new behavior trajectory of the CAPTCHA system based feature engineering, with utilizes the gradient boosting models, for human-machine behavior recognition is proposed. Performance in 100000 samples of real CAPTCHA system can obtain a more than 90% recognition accuracy.

Key words: gradient boosting, CAPTCHA, machine learning, human-machine recognition

CLC Number: