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نتیجه جستجو - کپچا

تعداد مقالات یافته شده: 2
ردیف عنوان نوع
1 Attacks and defenses in user authentication systems: A survey
حملات و دفاع در سیستم های احراز هویت کاربر: مرور-2021
User authentication systems (in short authentication systems) have wide utilization in our daily life. Unfortunately, existing authentication systems are prone to various attacks while both system security and usability are expected to be satisfied. But the current research still lacks a thorough survey on various types of attacks and corresponding countermeasures regarding user authentication, including traditional password-based and emerging biometric-based systems. In this paper, we make a comprehensive review on attacks and defenses of the authentication systems. We firstly introduce a number of common attacks by classifying them into different categories based on attacker knowledge, attack target, attack form and attack strength. Then, we propose a set of evaluation criteria for evaluating different kinds of attack defense mechanisms. Furthermore, we review and evaluate the existing methods of detecting and resisting attacks in the authentication systems by employing the proposed evaluation criteria as a common measure. Specifically, we focus on comparing and analyzing the performance of different defense mechanisms in different types of authentication systems. Through serious re- view and analysis, we put forward a number of open issues and propose some promising future research directions, hoping to inspire further research in this field.
Index Terms: Authentication system | Attack detection | Defense mechanisms | Spoofing attack | Liveness detection | CAPTCHA | Biometric authentication | Machine learning | Deep neural networks
مقاله انگلیسی
2 Fuzzy Facebook privacy boundaries: Exploring mediated lurking, vague-booking, and Facebook privacy management
مرزهای حریم خصوصی فیس بوک فازی : بررسی کمین واسطه، کپچا و مدیریت حریم خصوصی فیس بوک-2016
Managing privacy in the interconnected digital interaction environment of Facebook can be a complex yet vital endeavor. This study utilizes the theoretical framework of Communication Privacy Management (CPM) theory to explore relationships between concern about mediated lurking, strategic ambiguity (or vague-booking) on Facebook, and Facebook privacy management. The study explores three hypotheses. Overall, 383 participants completed an online survey instrument. Greater concern about mediated lurking was related to more Facebook privacy management. More frequent use of strategic ambiguity on Facebook was related to less Facebook privacy management. Individuals who were more highly concerned about mediated lurking were also more likely to employ more frequent use of strategic ambiguity on Facebook. Men engaged in significantly greater use of strategic ambiguity on Facebook and enacted significantly less Facebook privacy management than did women. Implications and future research related to Facebook privacy management from a CPM perspective are explored.
Keywords: Disclosure | Privacy | Communication privacy management (CPM) | theory Facebook privacy management | Concern about mediated lurking | Strategic ambiguity
مقاله انگلیسی
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