A three-way investigation of a game-CAPTCHA

Mohamed, Manar; Sachdeva, Niharika; Georgescu, Michael; Gao, Song; Saxena, Nitesh; Zhang, Chengcui; Kumaraguru, Ponnurangam; Oorschot, Paul C. van; Chen, Wei-Bang

doi:10.1145/2590296.2590298

Cited by 42 publications

(8 citation statements)

References 13 publications

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“…This was expected, since these tests are based on gamification, which aims to perform unwanted tasks in a playful and pleasant way. This finding fully supports Mohamed et al's (2013) study, focused on game-based type CAPTCHA tests, who claimed that the game is intended to be enjoyable, more user friendly, and specifically aimed at enhancing the user experience.…”

Section: Discussionsupporting

confidence: 84%

“…In order to encourage the users to perform tedious but substantial tasks, the activity is wrapped with a joyful function. This was translated in the CAPTCHA fields into different kinds of games, like puzzles or interactive games (Mohamed et al, 2013). In Figure 6, an example of a game can be seen, where the user needs to drag the food to the baby's mouth.…”

Section: Different Types Of Captcha Testsmentioning

confidence: 99%

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CAPTCHA – Security affecting User Experience

Gafni

Nagar

2016

InSITE Conference

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CAPTCHA -Completely Automated Public Turing test to tell Computers and Humans Apart -is a test with the aim to distinguish between malicious automatic software and real users in the era of Cyber security threats. Various types of CAPTCHA tests were developed, in order to address accessibility while implementing security. This research focuses on the users' attitudes and experiences related to use of the different kinds of tests. A questionnaire accompanied by experiencing five different CAPTCHA tests was performed among 212 users. Response times for each test and rate of success were collected automatically. The findings demonstrate that none of the existing tests are ideal. Although the participants were familiar with the Text-based test, they found it the most frustrating and non-enjoyable. Half of the participants failed in the Arithmetic-based test. While most of the participants found the picture and game based test enjoyable, their response time for those tests was the largest. The age factor was encountered as influencing both the attitude of the user and the performance, while younger users are more tolerant, have a better success rate, and are faster, the elder users found the tests annoying and time-consuming.

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Section: Discussionsupporting

confidence: 84%

Section: Different Types Of Captcha Testsmentioning

confidence: 99%

CAPTCHA – Security affecting User Experience

Gafni

Nagar

2016

InSITE Conference

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“…One currently existing technique for defending against relay attacks is the use of dynamic cognitive game CAPTCHA, called DCG-CAPTCHA [4,5]. In DCG-CAPTCHA, users follow the instructions given on the challenge website to select particular objects from among multiple decoy images having the same contours, and then carry them to the answer areas via drag and drop operations.…”

Section: Relay Attack and Related Researchesmentioning

confidence: 99%

An evaluation of the interactive video CAPTCHA method against automated attack

et al. 2019

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CAPTCHA is designed to detect automated programs (called bots) by requiring them to perform tasks that are easy for humans but difficult for automations. CAPTCHAs are vulnerable to relay attacks in which the challenges are relayed to remote human-solvers. In our previous paper, we proposed an interactive video type CAPTCHA that is strongly resistant to relay attacks. However, a quantitative evaluation of resistance to automated attacks still has not been carried out. Herein, we implement an automated attack for applying to our CAPTCHA and evaluate its resistance to automated attacks. Our results show the robustness of our proposed method against mean shift algorithm.

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“…There are some variations of the picture-based CAPTCHA, for example, sliding distorted pictures to arrange them ( Figure 5). Game based CAPTCHA test -includes puzzles or interactive games (Mohamed et al, 2013). User experience and gamification are some of the "buzzwords" in the last years (Robson, Plangger, Kietzmann, McCarthy, & Pitt, 2015).…”

Section: Figure 3 Arithmetic Operation Captchamentioning

confidence: 99%

CAPTCHA: Impact on User Experience of Users with Learning Disabilities

Gafni

Nagar

2016

IJELL

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CAPTCHA is one of the most common solutions to check if the user trying to enter a Website is a real person or an automated piece of software. This challenge-response test, implemented in many Internet Websites, emphasizes the gaps between accessibility and security on the Internet, as it poses an obstacle for the learning-impaired in the reading and comprehension of what is presented in the test. Various types of CAPTCHA tests have been developed in order to address accessibility and security issues. The objective of this study is to investigate how the differences between various CAPTCHA tests affect user experience among populations with and without learning disabilities. A questionnaire accompanied by experiencing five different tests was administered to 212 users, 60 of them with learning disabilities. Response rates for each test and levels of success were collected automatically. Findings suggest that users with learning disabilities have more difficulties in solving the tests, especially those with distorted texts, have more negative attitudes towards the CAPTCHA tests, but the response time has no statistical difference from users without learning disabilities. These insights can help to develop and implement solutions suitable for many users and especially for population with learning disabilities.

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A three-way investigation of a game-CAPTCHA

Cited by 42 publications

References 13 publications

CAPTCHA – Security affecting User Experience

CAPTCHA – Security affecting User Experience

An evaluation of the interactive video CAPTCHA method against automated attack

CAPTCHA: Impact on User Experience of Users with Learning Disabilities

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