COVID-19 vaccination certificates in the Darkweb

Autor: Georgoulias, Dimitrios, Pedersen, Jens Myrup, Falch, Morten, Vasilomanolakis, Emmanouil

COVID-19 vaccines have been rolled out in many countries and with them a number of vaccination certificates. For instance, the EU is utilizing a digital certificate in the form of a QR-code that is digitally signed and can be easily validated through

Externí odkaz: http://arxiv.org/abs/2111.12472

Tick Tock Break the Clock: Breaking CAPTCHAs on the Darkweb

Autor: Audran, David, Andersen, Marcus, Hansen, Mark, Andersen, Mikkel, Frederiksen, Thomas, Hansen, Kasper, Georgoulias, Dimitrios, Vasilomanolakis, Emmanouil

Publikováno v: Audran, D, Andersen, M, Hansen, M, Andersen, M, Frederiksen, T, Hansen, K, Georgoulias, D & Vasilomanolakis, E 2022, Tick Tock Break the Clock: Breaking CAPTCHAs on the Darkweb . in S De Capitani di Vimercati & P Samarati (eds), Proceedings of the 19th International Conference on Security and Cryptography . vol. 1, SCITEPRESS Digital Library, International Conference on Security and Cryptography-SECRYPT-Proceedings, pp. 357-365, 19th International Conference on Security and Cryptography (SECRYPT 2022), Lisbon, Portugal, 11/07/2022 . https://doi.org/10.5220/0011273300003283

Nowadays, almost all major websites employ CAPTCHAs. This prevents website scraping, fake account creation as well as DDoS or bruteforce attacks. For anonymity reasons, mainstream CAPTCHAs such as Google’s reCAPTCHA cannot be used on the darkweb. D

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d31134b35a024abd793cf023994c2299
https://doi.org/10.5220/0011273300003283