自發展塑膠貨幣以來，信用卡的詐欺、盜刷，向來是造成發卡銀行重大損失的風險之一，不僅是當前社會的地下經濟犯罪問題，同時在全球化的過程中，盜刷集團也逐漸發展出跨國分工的犯罪模式，各國發卡銀行在防制信用卡詐欺的策略上，不得不隨之求新求變，以因應盜刷集團詭譎多變的犯罪手法。 在管理詐騙生命週期理論中，偵測是其中極為重要的環節。本篇研究，即是針對如何提升發卡銀行的信用卡詐欺交易偵測效率進行相關研究，藉由相關文獻探討及實務經驗，以歷史資料分析方式，找出影響信用卡詐欺交易偵測效率之因素，來檢視詐欺風險管控措施的成效，同時提供建議，希望找出信用卡詐欺風險偵測之最佳化模式，俾以提升發卡銀行信用卡詐欺交易偵測效率。 本篇研究結果，首先證實在符合筆者所提出的效益/成本的模式下，發送交易警示簡訊，有助於偽卡偵測效率的提升。再者，偵測人員的資歷越深，其偵測效率越高。最後，銀行詐欺交易資訊的交流越密集，越有助於「側錄盜刷」類的詐欺交易偵測效率。 本研究目的除了提出建議以協助銀行減少損失外，盼能藉以喚起社會各界對信用卡詐欺問題之重視，期能遏止當前社會，乃至於國際間信用卡詐欺問題。 / The fraud of credit card usage has caused significant losses in worldwide issuing banks. The fraud syndicates have developed cross-boarder fraudulent activities along with global patners, which not only impacts worldwide economy, but also challenges the strategies initiated by all issuers. Due to the sophistication of the credit card process, experienced people and informative message are required elements to optimize the fraud detection process. The study attempts to analyze those major factors effecting credit card fraud detection process by adapting empirical analysis method on two real cases. Major findings are: 1) under a careful cost and benefit calculation, the more the SMS message sending, the higher the fraud detection rate, 2) the more the experience of detectors, the more effective the performance of the detection, and 3) the more the information shared across issuing banks, the higher the detection rate achieved for fraud skimming. In addition to the optimization of current fraud detection operation, the study is planned to draw public's attention on the serious credit card fraud issue. It is hoped that the attack level of credit card fraud could be mitigated effectively by taking recommendations made by this study.

關於信用卡詐欺風險管控的研究，係非常專業的問題，除了瞭解信用卡各項作業程序外，必須親自參與實務上的管控經驗，才能充分瞭解現有市場上，信用卡詐欺所發生之原因、詐欺模式、手法與趨勢，也唯有做到理論結合相關實務管控經驗，才能研究出有效的防制策略。目前在實務上防制信用卡詐欺方面，由本文中可發現，業者與警政單位在處理信用卡風險管控與詐欺案件時，有非常多的盲點與困難，也突顯出其專業能力上之不足，因此導致信用卡詐欺問題之嚴重。 在防制信用卡詐欺研究當中，筆者第一次嘗試將信用卡實務運作之模式貢獻出來 ; 以過去到現在的實務經驗，將信用卡所發生的案例，來探究其發生的原因 ; 以運用分析的方法，來建立各項風險管控措施 ; 以闡釋各項業務之作業風險，來遏止風險損失之發生 ; 以紮實的教育訓練教材，讓特約商店做好第一道的防衛 ; 以科學的統計方法，來研究防衛參數與增加偵測系統的防衛效能 ; 以實務管控的經驗，來遏止其犯罪手法的翻新 ; 以實際案件調查的經驗，來瓦解詐欺集團的組織，所以必須瞭解信用卡整體運作的關係與詐欺手法，才能深入瞭解各項風險管控問題，並結合預防作業、偵測系統、調查作業的功能，方能充分發揮信用卡業務詐欺風險管控的效能。 除了建立完整的風險管控作業之外，在第六章之建議事項中，就主管機關、司法機關、警政單位、發卡業者、收單業者、特約商店、持卡人與國際組織等方面 ; 提出個人具體之建言，藉以喚起社會各界對信用卡詐欺問題之重視，以推動損害防阻之功，徹底解決當前所發生之信用卡詐欺問題。 / The research on credit card risk management is a specialized field. Besides the need of understanding the various operational processes, personal involvement’s and practical experiences in respect of credit card risk management are essential in order to fully appreciate the reason for credit card frauds in the current market. An effective credit card fraud prevention strategy consists of the theoretical aspects and practical experiences of credit card fraud management. Based on this paper, it appears that strategies of credit card fraud prevention are solely lacking in the current market. This is because the business sectors and police department encounters numerous ‘blind spots’ and problems when tackling with fraud issues. Also, the lack of professionalism in control and prevention strategies resulted in serious credit card fraud issues. In this research, the author would attempt to showcase for the first time the credit card’s practical working models;1) to try to investigate and understand the reasons for credit card frauds by reviewing past and present real life cases; 2) to develop various risk management methodologies via credit card risks analysis; 3) to explain the various businesses’ operational risks to reduce if not prevent loss occurrences; 4) to constantly upgrade /educate the merchant banks with solid training programmers to make them an effective first line of defense; 5) to employ scientific statistical methods to aid in the research of any defensive mechanisms as well as to increase the effectiveness of early detective systems, if any; 6) to make use of practical credit card risk management experiences in order to prevent repeat offences; 7) to utilize real life investigative experiences to dissolve credit card syndicates and/or groups. Therefore, know the relation of whole operation of credit card and modus operandi could understand in depth of every risk management issue, and combine the function of preventing operation, detection system, investigation process can be fully developed efficiency for credit card risk management. In addition to establish sophisticated a developing risk management methodology, the author has directed his personal opinions to the various industry players such as the regulatory bodies, policing units, credit card issuers, acquiring banks, merchant banks and credit card users. In chapter 6 of the recommendations, he attempts to draw the public’s attention on the seriousness of credit card frauds that exists in our society. He also hopes to completely eradicate the issues of credit card frauds by actively promoting the risk prevention methodology of credit card frauds.