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22 lip 2023 · In this work, we explore CAPTCHAs in the wild by evaluating users' solving performance and perceptions of unmodified currently-deployed CAPTCHAs.
25 mar 2021 · We first summarize existing text-based CAPTCHAs using a newly proposed taxonomy based on their resistance mechanisms and systematically review corresponding attacks in terms of methods and...
25 lis 2020 · The main objective of this project: 1. To provides a general introduction of the CAPTCHA schema and discusses its general characteristics. 2. To describes the CAPTCHA applications with its...
This paper presents a real-world user study with over 3,600 unbiased (unwitting) participants solving over 9,000 reCAPTCHAv2 challenges. We explore four new dimensions of reCAPTCHAv2 solving time: # of attempts, service type, as well as educational level and major.
As most people find solving a captcha challenge annoying, reCaptcha uses an advanced and adaptive risk analysis engine to make an initial judgment on whether a request is from a legitimate user or an automated program. reCaptcha allows a legitimate user to pass the veri-fication without having to solve a challenge.
reCAPTCHA Enterprise provides a comprehensive online fraud-detection platform that helps prevent fraudulent and spammy or abusive digital client activity across any web and application services...
One of the most common defense mechanisms against bots abusing online services is the introduction of Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA), so it is extremely important to understand which CAPTCHA schemes have been designed and their actual effectiveness against the ever-evolving bots.
