Trustly holds a European Payment Services Provider (PSP) license in accordance with the Payment Services Directive (PSD, 2007/64/EC), which has been implemented into Swedish law by the Swedish Payment Service Act (2010:751).
It is under supervision by the Swedish Financial Supervisory Authority and it follows strict regulations relating to the processing of payments, thus, Trustly payments require strong authentication. A transaction cannot be made unless you provide your online banking credentials including the one-time code which only you know. Your credentials are not stored.