REVIEW on Development of Some Strong Visual CAPTCHAs and Breaking of Weak Audio CAPTCHAs

被引：0
|
作者：
Saikirthiga [1 ]
Vaithyasubramanian, S. [2 ]
机构：
[1] Sathyabama Univ, Chennai, Tamil Nadu, India
[2] Sathyabama Univ, Dept Math, Chennai, Tamil Nadu, India
来源：
2016 INTERNATIONAL CONFERENCE ON INFORMATION COMMUNICATION AND EMBEDDED SYSTEMS (ICICES) | 2016年
关键词：
CAPTCHAs; usability features; visual CAPTCHAs; audio CAPTCHAs; vulnerabilities;
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
The objective of this review paper is to discuss about the strengths and weaknesses in the visual and audio CAPTCHAs. The basic techniques in breaking visual CAPTCHAs are discussed in detail. The issues regarding usability features are studiedby choosing the user affinity by means of reaching the users through questionnaire. In order to avoid the risks in text-based CAPTCHAs, random images based on human appearance characteristics are generated. This again is limited as visually challenged users cannot approach these types of CAPTCHAs henceforth preventing them to approach resources available. As technology improves professional programmers find means to break audio CAPTCHAs too. The suggestions to avoid these vulnerabilities are also discussed briefly.
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页数：4
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