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I think rather than being broken, captcha models are just going to be made more complex. Maybe they'll start asking you to write a poem or play a mini problem s
by briga 9y ago
I think rather than being broken, captcha models are just going to be made more complex. Maybe they'll start asking you to write a poem or play a mini problem solving game.
- taeric 9y agoI'd expect adversarial images to take off in captcha space. Don't try and avoid the models, exploit them.
- lozenge 9y agoAdversarial images need to be made with knowledge of the model.
- yorwba 9y agoActually, no [1]. From the abstract: We can cause the network to misclassify an image by applying a certain imperceptible perturbation, which is found by maximizing the network's prediction error. In addition, the specific nature of these perturbations is not a random artifact of learning: the same perturbation can cause a different network, that was trained on a different subset of the dataset, to misclassify the same input. [1] https://arxiv.org/abs/1312.6199 https://arxiv.org/abs/1312.6199 EDIT: Also interesting: "Universal Adversarial Perturbations" https://arxiv.org/abs/1610.08401 https://arxiv.org/abs/1610.08401