In national and international regulations and laws, the legislators have imposed a duty on credit institutions to “introduce appropriate business and customer-based security systems to combat money laundering, the financing of terrorism and fraudulent activity, and to detect any unusual transactions“. The implementation of EU regulations 2580/2001, 881/2002 and the corresponding national regulations put in place by the member states is intended to prevent the financing, planning and execution of acts of terrorism. Sanctions can be imposed on individuals, groups and organizations. Sanctions lists are published by the EU, OFAC, the Bank of England and others and are mandatory. It must be ensured that the people, groups and organizations on whom sanctions have been imposed can no longer obtain money or financial resources, either directly or indirectly.