<p>This thesis investigates fraud and the situation on Internet with e-commerce today, to point on some potential threats and needed countermeasures. The work reviews several state of the art e-fraud schemes, techniques used in the schemes and statistics on the extent of e-fraud. This part shows that e-frauds are today both sophisticated and widespread. </p><p>Since real world frauds are deemed impossible to fully cover in order to predict potential new e-frauds, the thesis adopts a different approach. It suggests two abstraction models for fraud cases, a protocol model and a functional model. These are used to perform analysis on case studies on both telecom frauds and e-frauds. The analysis presents characteristics for both types of frauds. Using one of the abstraction models, the functional model, conceptually similar cases among telecom frauds as well as e-fraud cases are identified. The similar cases in each category are then compared, using the other abstraction model, the protocol model. The study shows that concepts from telecom frauds already exist in e-frauds. </p><p>Several challenges and some possibilities in e-fraud prevention and detection are also extracted in the comparative study of the different categories. The major consequence of the challenges is e-frauds’ higher scalability compared to telecom frauds. </p><p>Finally, this thesis covers several existing countermeasures in e-commerce along with specific countermeasures against auction fraud, phishing and spam. However, it is shown that these countermeasures do not address the challenges in e-fraud prevention and detection to a satisfactory extent. Therefore, this thesis proposes several high-level countermeasures in order to address the challenges.</p>

This thesis investigates fraud and the situation on Internet with e-commerce today, to point on some potential threats and needed countermeasures. The work reviews several state of the art e-fraud schemes, techniques used in the schemes and statistics on the extent of e-fraud. This part shows that e-frauds are today both sophisticated and widespread. Since real world frauds are deemed impossible to fully cover in order to predict potential new e-frauds, the thesis adopts a different approach. It suggests two abstraction models for fraud cases, a protocol model and a functional model. These are used to perform analysis on case studies on both telecom frauds and e-frauds. The analysis presents characteristics for both types of frauds. Using one of the abstraction models, the functional model, conceptually similar cases among telecom frauds as well as e-fraud cases are identified. The similar cases in each category are then compared, using the other abstraction model, the protocol model. The study shows that concepts from telecom frauds already exist in e-frauds. Several challenges and some possibilities in e-fraud prevention and detection are also extracted in the comparative study of the different categories. The major consequence of the challenges is e-frauds’ higher scalability compared to telecom frauds. Finally, this thesis covers several existing countermeasures in e-commerce along with specific countermeasures against auction fraud, phishing and spam. However, it is shown that these countermeasures do not address the challenges in e-fraud prevention and detection to a satisfactory extent. Therefore, this thesis proposes several high-level countermeasures in order to address the challenges.

近年來，國內因大環境的變遷及電信自由化的推行，電信服務已成為國人日常生活中不可或缺之工具，尚因法規環境未置完善，致使電信人頭電話亦成為電信詐欺的犯罪的工具，電信詐欺不僅造成電信呆帳，並破壞電信事業的電信秩序及健全發展的環境外，同時嚴重影響社會治安、增加社會成本及損害公共利益，更使國家整體之競爭力受到負面的牽引。上述因產業政策不明確及法律制度的不健全，並未與時俱進，使電信犯罪之源頭電信人頭帳戶，無法建立有效的預防機制，故使電信市場成為電信詐欺份子得以犯罪的快樂天堂，並以「有騙無類」的作風行騙老少及國內外，電信詐欺目前已成為我國民怨排行第二名，致使得國內訂立電信聯合徵信制度的需求，成為產業界、輿論界、政界與法學界關心的焦點。 本研究係蒐集分析電信詐欺之特性及其對電信事業及社會成本增加所造成的損傷及影響，並以國外如英、美、日本及新加坡等國電信聯合徵信制度之損失統計及相關的法例及作法，藉由實務上之運作與現行法令的落差，檢視目前國內法律不足之處。同時由憲法位階對人權之秘密通訊之保障，對我國未來電信事業建立聯合徵信中心可行性提出研析與建議。 / Since the liberalization of telecom, telecommunication services become more and more an integral part of everyday life. Unfortunately, as well as telecom fraud through fraudulent accounts has become a serious problem in Taiwan. Due to telecom regulations are not regularly updated, the false account numbers were abused easily by the telecom fraud group, and not only caused telecom operators bad debt and profit lose, but also increased social cost obviously, such as the social security, public benefit and the country competitiveness. There is no effective preventive measure to address telecom fraud. Therefore, this country becomes a paradise for this type of activity. Telecom fraud targets all people, the youth, the elderly and even foreign immigrants, and ranks in the top two in social grievances. The telecom joint credit information system was paid attention by the Public, Industry and Government, which is to build up a effective preventive mechanism by regulation for telecom fraud is a important issue to be solved. Due to the uncertainty industrial policy and the legal system do not harmony with social needs, and not kept pace with the times, so that the source of the fake telecom numbers for telecom fraud criminal are unable to manage and block. In this study, I will analyze the characteristics of telecom fraud and its social cost and impact on the telecom industry and then to discuss the Telecom joint credit regulatory and practices used in other countries such as Britain, the United States, Japan and Singapore. This analysis will compare it with the current domestic legal deficiencies and proposes feasible recommendations.

自兩岸於1987年開放探親以來，隨著兩岸頻繁的交流，跨兩岸性的犯罪活動，如販毒、詐欺、人口販運等犯罪亦日趨嚴重，特別是近年來出現有別於以往傳統詐騙手法的新型態詐欺犯罪—以電話、網路為中介物的「電信詐欺犯罪」，大肆橫行於兩岸，為害兩岸治安最深，是類犯罪不斷翻新手法，巧藉各種名目詐騙民眾獲取不法暴利，造成極嚴重的社會成本付出。過去，兩岸共同打擊犯罪機制，僅有「金門協議」及其他非正式管道，以為合作打擊犯罪的依據，因「金門協議」的內涵不足致使成果有限。隨著政治氛圍的改變，兩岸終於2009年4月簽署「海峽兩岸共同打擊犯罪及司法互助協議」，為兩岸共同打擊犯罪奠定了新里程碑，惟分析其內容並與「駐美國台北經濟文化代表處與美國在台協會間之刑事司法互助協定」比較，可以發現尚有許多問題亟待解決。本研究藉由分析現行兩岸共同打擊犯罪機制，並提出問題及建議，以強化兩岸共同打擊電信詐欺犯罪的力道。 / Since 1987 Taiwan and Mainland China allowed people visited opposite side, cross-strait crimes such as smuggling drugs, fraud and human trafficking have become more and more serious as both parts frequently contacting with each other. Recently, new type fraud which is different from traditional fraud spread around and critically damage social security, especially telecom fraud by telephone and internet being the mediators. By using multiform excuses, these kinds of crimes continuously renovate to cheat innocent people and obtain huge illegal money, so that they cause a great loss of social. In the past, there were only Kinmen Agreement and the other unofficial channel as the basis in the cross-strait crime-fighting mechanism. However, Kinmen Agreement was too narrowed its coverage to limited in its results. With the political atmosphere changes, each part finally signed “Cross-Strait Agreement on Joint Crime-Fighting and Judicial Mutual Assistance” in April, 2009. This is the new milestone of cross-strait crime-fighting cooperation mechanism. As analyzing it and comparing it with “Agreement on Mutual Legal Assistance in Criminal Matters between the Taipei Economic and Cultural Representative Office and the American Institute in Taiwan”, we found there are still some obstacles need to be resolved. This study offers some questions and advises in order to strengthen the cross-strait telecom fraud crime-fighting cooperation mechanism.