{"id":"W7116286533","doi":"10.18280/ijsse.150901","title":"Dynamic Mirrored CAPTCHA Design and Security Evaluation","year":2025,"lang":"","type":"article","venue":"International Journal of Safety and Security Engineering","topic":"User Authentication and Security Systems","field":"Computer Science","cited_by":0,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"","keywords":"CAPTCHA; Poison control; Threat model; Vulnerability (computing); Human factors and ergonomics","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.002200207,0.0008548839,0.0004237189,0.001027079,0.0006562659,0.001401243,0.001427614,0.001459153,0.006374307],"category_scores_gemma":[0.01131396,0.0003080052,0.0004636189,0.0005778003,0.0008611136,0.001797122,0.0008958615,0.0007772108,0.0008307279],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001496732,"about_ca_system_score_gemma":0.001167058,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.002164261,"about_ca_topic_score_gemma":0.001583564,"domain_scores_codex":[0.9962494,0.0009436558,0.000126986,0.0003507881,0.001965937,0.000363202],"domain_scores_gemma":[0.9894554,0.003823888,0.0006230345,0.001679611,0.00422463,0.0001935042],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.00517988,0.001157333,0.005424488,0.0008777678,0.0002092483,0.0007518263,0.000686764,0.3281417,0.2418911,0.02234963,0.005133829,0.3881964],"study_design_scores_gemma":[0.0001415235,0.002756576,0.001299273,0.00004741498,0.00009140262,0.0004587622,0.0001715091,0.8264331,0.1633421,0.001529614,0.003683067,0.00004564284],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.4743744,0.0007857429,0.4991654,0.0003225463,0.0002390771,0.0009362372,0.0002178417,0.003011944,0.02094676],"genre_scores_gemma":[0.9083338,0.0001403544,0.08717649,0.00006780822,0.00001587254,0.0001589474,0.0001365395,0.0001244348,0.003845762],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.006374307,"threshold_uncertainty_score":0.02132416,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01237133936300073,"score_gpt":0.2696006855075657,"score_spread":0.2572293461445649,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}