CAPTCHA

Image Recognition CAPTCHAs

Monica Chew, J. D. Tygar

Citations: 171 • 2004

I am Robot: (Deep) Learning to Break Semantic Image CAPTCHAs

Suphannee Sivakorn, Iasonas Polakis, Angelos D. Keromytis

Citations: 130 • 2016

Securing web service by automatic robot detection

KyoungSoo Park, Vivek S. Pai, Kang‐Won Lee, Seraphin Calo

Citations: 75 • 2006

Engineering Graphical Captcha and AES Crypto Hash Functions for Secure Online Authentication

Nafisah Kheshaifaty, Adnan Gutub

Citations: 48 • 2021

3D CAPTCHA: A Next Generation of the CAPTCHA

Montree Imsamai, Suphakant Phimoltares

Citations: 48 • 2010

CAPTCHA Recognition Using Deep Learning with Attached Binary Images

Alaa Thobhani, Mingsheng Gao, Ammar Hawbani, Safwan Taher Mohammed Ali, Amr Abdussalam

Citations: 40 • 2020

Intelligent Chatbot for Lab Security and Automation

V Akshatha Prasad, R. Ranjith

Citations: 36 • 2020

CAPTCHAs: Humans vs. Bots

Aleksey Kolupaev, Juriy Ogijenko

Citations: 36 • 2008

You need to show that you are not a robot

Leopoldina Fortunati, Anna Maria Manganelli, Filippo Cavallo, Furio Honsell

Citations: 27 • 2019

Text-Based CAPTCHA Using Phonemic Restoration Effect and Similar Pronunciation with an Asian Accent

Misako Goto, Toru Shirato, Ryuya Uda

Citations: 21 • 2014

GeoCAPTCHA — A novel personalized CAPTCHA using geographic concept to defend against 3<sup>rd</sup> Party Human Attack

Te-En Wei, Albert B. Jeng, Hahn-Ming Lee

Citations: 20 • 2012

Image flip CAPTCHA

M. Tariq Banday, Nisar A. Shah

Citations: 19 • 2009

SURVEY ON CAPTCHA SYSTEMS

Rizwan Ur Rahman

Citations: 15 • 2012

Attacking Image Based CAPTCHAs Using Image Recognition Techniques

David Lorenzi, Jaideep Vaidya, Emre Uzun, Shamik Sural, Vijayalakshmi Atluri

Citations: 15 • 2012

A study on Accessibility of Google ReCAPTCHA Systems

Ombretta Gaggi

Citations: 14 • 2022

Directional Based Graphical Authentication Method with Shoulder Surfing Resistant

Noor Ashitah Abu Othman, Muhammad Akmal Abdul Rahman, Anis Shobirin Abdullah Sani, Fakariah Hani Mohd Ali

Citations: 13 • 2018

Artificial Intelligence in Graduate Medical Education Applications

Sarah Mangold, Margie Ream

Citations: 13 • 2024

Deep Learning Based CAPTCHA Recognition Network with Grouping Strategy

Zaid Derea, Beiji Zou, Asma A. Al-Shargabi, Alaa Thobhani, Amr Abdussalam

Citations: 12 • 2023

Gamification of internet security by next generation CAPTCHAs

S. Ashok Kumar, N. Ram Kumar, Shiva Prakash, K. Sangeetha

Citations: 11 • 2017

A Comparative Study of Various CAPTCHA Methods for Securing Web Pages

Shashank Awasthi, Arun Pratap Srivastava, Swapnita Srivastava, Vipul Narayan

Citations: 11 • 2019