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ARTiFACIAL: Automated Reverse Turing test using FACIAL features
2004
Multimedia Systems
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Second, we propose a new HIP algorithm based on detecting human face and facial features. Human faces are the most familiar object to humans, rendering it possibly the best candidate for HIP. ...
We conducted user studies and showed the ease of use of our system to human users. We designed attacks using the best existing face detectors and demonstrated the difficulty to bots. ...
We name our HIP algorithm ARTiFACIAL, standing for Automated Reverse Turing test using FACIAL features. It relates to (and differs from) the original Turing test in several ways. ...
doi:10.1007/s00530-003-0122-3
fatcat:zy2ujnckuzgrlhml2xe4g72cri
ARTiFACIAL
2003
Proceedings of the eleventh ACM international conference on Multimedia - MULTIMEDIA '03
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Second, we propose a new HIP algorithm based on detecting human face and facial features. Human faces are the most familiar object to humans, rendering it possibly the best candidate for HIP. ...
We conducted user studies and showed the ease of use of our system to human users. We designed attacks using the best existing face detectors and demonstrated the difficulty to bots. ...
We only show part of the test image for clarity.
We name our HIP algorithm ARTiFACIAL, standing for Automated Reverse Turing test using FACIAL features. ...
doi:10.1145/957013.957075
dblp:conf/mm/RuiL03
fatcat:i5jqy6qsy5bn3eywq2ivuaepcu
Attacks and design of image recognition CAPTCHAs
2010
Proceedings of the 17th ACM conference on Computer and communications security - CCS '10
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Image collection and CAPTCHA generation can be fully automated. ...
An infinite number of types of objects can be used to generate challenges, which can effectively disable the learning process in machine learning attacks. ...
INTRODUCTION CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) [1] [2] [3] , also known as Human Interactive Proof (HIP), is an automated Turing test in which both ...
doi:10.1145/1866307.1866329
dblp:conf/ccs/ZhuYLYLXYC10
fatcat:u5dkkmh3h5gdxkpnkceeqfh3hy
A Low-Cost Attack against the hCaptcha System
[article]
2021
arXiv
pre-print
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This paper presents an automated system that can break hCaptcha challenges with a high success rate. ...
This work is supported in part by US NSF under grant OIA-1946231. ...
Our automated CAPTCHA breaker solves hCaptcha challenges with 95.93% accuracy, making its reverse Turing tests broken. ...
arXiv:2104.04683v1
fatcat:5sdd4vlmjnhuhj6yudl6uenfny
New Image-based CAPTCHAs based on Neural Style Transfer
2019
IET Information Security
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Over the last few years, completely automated public turing test to tell computers and humans apart (CAPTCHA) has been used as an effective method to prevent websites from malicious attacks, however, CAPTCHA ...
The comparison results demonstrated that the neural style transfer decreased the success rate of automated attacks. ...
Introduction Completely automated public turing test to tell computers and humans apart (CAPTCHA) is designed to differentiate humans from automated scripts by asking users to perform some specified tasks ...
doi:10.1049/iet-ifs.2018.5036
fatcat:s2zvr74cyjhljjsvuueet2zrgy
Exploiting the Human–Machine Gap in Image Recognition for Designing CAPTCHAs
2009
IEEE Transactions on Information Forensics and Security
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This difference in recognizability makes it a promising candidate for automated Turing tests called CAPTCHAs which can differentiate humans from machines. ...
We give a detailed description of our experimental image CAPTCHA system, IMAGINATION, that uses systematic distortions at its core. ...
to pinpoint facial features in them. ...
doi:10.1109/tifs.2009.2022709
fatcat:akujpmik4vcqfmjruomgcq7giy
I am Robot: (Deep) Learning to Break Semantic Image CAPTCHAs
2016
2016 IEEE European Symposium on Security and Privacy (EuroS&P)
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Since their inception, captchas have been widely used for preventing fraudsters from performing illicit actions. ...
Nevertheless, economic incentives have resulted in an arms race, where fraudsters develop automated solvers and, in turn, captcha services tweak their design to break the solvers. ...
Any opinions, findings, conclusions, or recommendations expressed herein are those of the authors, and do not necessarily reflect those of the US Government or the NSF. ...
doi:10.1109/eurosp.2016.37
dblp:conf/eurosp/SivakornPK16
fatcat:u2gegsjtfnd3beflnxrem6idja
Interweaving Unicode, Color, and Human Interactions to Enhance CAPTCHA Security
2014
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A CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a security mechanism that is widely used to maintain the security of web services by preventing malicious programs ...
The multi-layered security approach employed in this CAPTCHA mainly comes from its use of Unicode as an input space, a virtual keyboard as the input device, the use of homoglyphs, the correlated usage ...
Hence, a CAPTCHA is sometimes referred to as a "reverse Turing test". CAPTCHA algorithms must have two characteristics. ...
doi:10.7939/r3ph3c
fatcat:6rorqtfexzd25ftjuegvdtvmjy