Gotta CAPTCHA'Em all: a survey of 20 Years of the human-or-computer Dilemma

M Guerar, L Verderame, M Migliardi… - ACM Computing …, 2021 - dl.acm.org
A recent study has found that malicious bots generated nearly a quarter of overall website
traffic in 2019 [102]. These malicious bots perform activities such as price and content …

Recent advances of Captcha security analysis: a short literature review

NT Dinh, VT Hoang - Procedia Computer Science, 2023 - Elsevier
CAPTCHA has long been used to keep bots from misusing web services. Various CAPTCHA
schemes have been proposed over the years, principally to increase usability and security …

An Empirical Study & Evaluation of Modern {CAPTCHAs}

A Searles, Y Nakatsuka, E Ozturk, A Paverd… - 32nd usenix security …, 2023 - usenix.org
For nearly two decades, CAPTCHAS have been widely used as a means of protection
against bots. Throughout the years, as their use grew, techniques to defeat or bypass …

On the necessity of user-friendly CAPTCHA

CA Fidas, AG Voyiatzis, NM Avouris - Proceedings of the SIGCHI …, 2011 - dl.acm.org
A" Completely Automated Public Turing test to tell Computers and Humans
Apart"(CAPTCHA) is a mechanism widely used nowadays for protection of web applications …

A survey of CAPTCHA technologies to distinguish between human and computer

X Xu, L Liu, B Li - Neurocomputing, 2020 - Elsevier
Abstract CAPTCHA, Completely Automated Public Turing test to tell Computers and Humans
Apart, is widely used as a security mechanism to classify human and computer. This security …

Breaking e-banking CAPTCHAs

S Li, SAH Shah, MAU Khan, SA Khayam… - Proceedings of the 26th …, 2010 - dl.acm.org
Many financial institutions have deployed CAPTCHAs to protect their services (eg, e-
banking) from automated attacks. In addition to CAPTCHAs for login, CAPTCHAs are also …

Human-artificial intelligence approaches for secure analysis in CAPTCHA codes

N Dinh, L Ogiela - EURASIP Journal on Information Security, 2022 - Springer
Abstract CAPTCHA (Completely Automated Public Turing test to tell Computers and
Humans Apart) has long been used to keep automated bots from misusing web services by …

Adversarial machine learning

CJ Hernández-Castro, Z Liu, A Serban… - Security and Artificial …, 2022 - Springer
Recent innovations in machine learning enjoy a remarkable rate of adoption across a broad
spectrum of applications, including cyber-security. While previous chapters study the …

CAPTCHA design and security issues

YW Chow, W Susilo, P Thorncharoensri - Advances in Cyber Security …, 2019 - Springer
The concept of reverse Turing tests, or more commonly known as CAPTCHAs, for
distinguishing between humans and computers has been around for many years. The …

Exploring the influence of CAPTCHA types to the users response time by statistical analysis

D Brodić, A Amelio, R Janković - Multimedia Tools and Applications, 2018 - Springer
CAPTCHA stands for Completely Automated Public Turing Test to Tell Computers and
Humans Apart. It is a test program that solves a given task for preventing the attacks made …