Tuan GA, Khoa NV. Evaluating the Guessability of 6-Digit PINs under User Bias and Date-of-Birth Leakage . ISJ [Internet]. 2026Aug.22 [cited 2026Aug.25];2(28):57-68. Available from: https://isj.vn/index.php/journal_STIS/article/view/6411