An investigation of the usability of image-based CAPTCHAs using PROMETHEE-GAIA method

S Arsić, D Nikolic, M Jevtic - Multimedia Tools and Applications, 2021 - Springer
Today, it is difficult to find an adequate Web site with a registration form that is not protected
with some automated human proof test. One of the oldest concepts in Artificial Intelligence …

Undetectable communication: The online social networks case

F Beato, E De Cristofaro… - 2014 Twelfth Annual …, 2014 - ieeexplore.ieee.org
Online Social Networks (OSNs) provide users with an easy way to share content,
communicate, and update others about their activities. They also play an increasingly …

Development of two novel face-recognition CAPTCHAs: a security and usability study

G Schryen, G Wagner, A Schlegel - Computers & security, 2016 - Elsevier
CAPTCHAs are challenge-response tests that aim at preventing unwanted machines,
including bots, from accessing web services while providing easy access for humans …

Virtualfriendship: Hiding interactions on online social networks

F Beato, M Conti, B Preneel… - 2014 IEEE Conference …, 2014 - ieeexplore.ieee.org
The tremendous popularity of Online Social Networks (OSNs), such as Facebook and
Google+, has accustomed people to an easy and reliable process of social interactions …

Protecting Public OSN Posts from Unintended Access

F Armknecht, M Hauptmann, S Roos… - arXiv preprint arXiv …, 2013 - arxiv.org
The design of secure and usable access schemes to personal data represent a major
challenge of online social networks (OSNs). State of the art requires prior interaction to grant …

An additional protection layer for confidential OSNs posts

F Armknecht, M Hauptmann, S Roos… - 2014 IEEE International …, 2014 - ieeexplore.ieee.org
The design of secure and usable access schemes to personal data represent a major
challenge of online social networks (OSNs). State of the art requires prior interaction to grant …

A comparative analysis of time-lag type-in advertisements

T Yamakami, A Ikeda, T Fujii - 2017 19th International …, 2017 - ieeexplore.ieee.org
Advances in Web-based services provide rich opportunities for a diverse set of advertising
methods. In this paper, a time-lag type-in advertising method is proposed. In order to …

Undetectable Communication: The Online Social Networks Case

K Rasmussen - 2014 - cs.ox.ac.uk
Abstract Online Social Networks (OSNs) provide users with an easy way to share content,
communicate, and update others about their activities. They also play an increasingly …