Sökning: "reCAPTCHA"

Hittade 3 uppsatser innehållade ordet reCAPTCHA.

  1. 1. Classifying Google reCAPTCHA v2 - A study using transfer learning models and evaluating their robustness against adversarial perturbations

    Magister-uppsats, Lunds universitet/Statistiska institutionen; Lunds universitet/Nationalekonomiska institutionen

    Författare :Arvid Björklund; Marius Uogele; [2023]
    Nyckelord :reCAPTCHA; transfer learning; adversarial perturbations; convolutional neural network; Business and Economics;

    Sammanfattning : This thesis seeks to examine the suitability and robustness of transfer learning models in creating an efficient reCAPTCHA v2 classifier, and further evaluates their performance against various adversarial attacks. Three models - DenseNet201, EfficientNetV2, and InceptionV3 - were trained and assessed, highlighting the applicability of transfer learning techniques in the classification of reCAPTCHA v2 challenges. LÄS MER

  3. 2. Image Recognition for Solving Google’s reCAPTCHA : An Investigation of how Different Aspects Affects the Security of Google’s reCAPTCHA

    Kandidat-uppsats, KTH/Datavetenskap

    Författare :Oscar Bergström; Jennifer Larsson; [2022]
    Nyckelord :;

    Sammanfattning : In this project, an image recognition solver for Google’s reCAPTCHA was used to investigate how different aspects of the reCAPTCHA challenge affects its efficiency on defending against bots. The aspects that were examined was the type of reCAPTCHA challenge and the object which should be identified in the images. LÄS MER

  4. 3. Scraping bot detection using machine learning

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Hamta Dezfoli; Joseph Newman; [2022]
    Nyckelord :Artificial agents; Bot detection; Machine learning; Data analysis; HTTP requests; ReCaptcha; Artificiella agenter; Detektering av bottar; Maskininlärning; Dataanalys; HTTP förfrågningar; ReCaptcha;

    Sammanfattning : Illegitimate acquisition and use of data is a problematic issue faced by many organizations operating web servers on the internet today. Despite frameworks of rules to prevent ”scraping bots” from carrying out this action, they have developed advanced methods to continue taking data. LÄS MER