Dump may refer to the data dump of information contained on the magnetic strip of the authorization card: pobieranie danych.
For example, in the case of an illegal credit card dump:
'Credit Card Dump' A credit card dump is an unauthorized digital copy of all the information contained in the magnetic strip of an active credit card, created with the intention of illegally making a fake credit card that can be used by cybercriminals to make purchases.
https://www.investopedia.com/terms/c/credit-card-dump.asp