
research note
A Survey of Adversarial CAPTCHAs on its History, Classification and Generation
This paper is a survey of adversarial CAPTCHAs, positioned as a response to the long-running security/usability trade-off in classic CAPTCHA design

research note
This paper is a survey of adversarial CAPTCHAs, positioned as a response to the long-running security/usability trade-off in classic CAPTCHA design

research note
This paper presents a large-scale, real-world user study of Google's reCAPTCHAv2 conducted over 13 months with more than 3,600 distinct university users interacting via live account creation and pa…

research note
UA-Radar studies whether the User-Agent string still materially changes what modern websites serve, or whether it is mostly legacy noise that can be removed without breaking the web