MATUSZEK, Grzegorz. PHENOMENON AND SCALE OF FRAUD BY THE „GRANDPARENT SCAM” METHOD IN THE AREA OF THE SILESIAN VOIVODESHIP IN 2017-2022. Security Forum, [S. l.], v. 8, n. 2, 2026. Disponível em: https://ojs.wsb.edu.pl/index.php/sf/article/view/1806. Acesso em: 22 sep. 2026.