Adaptable Context Management Framework for Secure Network Services. - Zbigniew Kotulski; Mariusz Sepczuk; Albert Sitek; Marcin Alan Tunia (Ann. UMCS Informatica, 2014)

One-Time Code Cardholder Verification Method in Electronic Funds Transfer Transactions. - Albert Sitek (Ann. UMCS Informatica, 2014)

Cardholder's Reputation System for Contextual Risk Management in Payment Transactions. - Albert Sitek; Zbigniew Kotulski (MMM-ACNS, 2017)

On a New Intangible Reward for Card-Linked Loyalty Programs. - Albert Sitek; Zbigniew Kotulski (ACS, 2018)

POS-originated transaction traces as a source of contextual information for risk management systems in EFT transactions. - Albert Sitek; Zbigniew Kotulski (EURASIP J. Inf. Secur., 2018)