| 000 | 02469nam a2200289 4500 | ||
|---|---|---|---|
| 001 | 393741 | ||
| 090 | _a393741 | ||
| 100 | _a20160222d2015 y0pory50 ba | ||
| 101 | _aeng | ||
| 200 |
_aFraud detection within mobile money _bRecurso eletrónico _ea mathematical statistics approach _fFrida Kappelin, Jimmie Rudvall |
||
| 210 |
_aKarlskrona, Sweden _c[s.n.] _d2015 |
||
| 215 |
_a1 CD-ROM _d12 cm |
||
| 300 | _aTese de Mestrado em "Computer Science" apresentada ao "Department of Computer Science & Engineering" do "Blekinge Institute of Technology", tendo como orientadores Dejan Baca, Stefan Axelsson. Ficheiro de 767 KB em formato PDF (54 p.). | ||
| 330 | _a1 Introduction. 1.1 Background. 1.2 Research question. 2 Related Work. 2.1 Benford’s law. 2.2 Rules and limits. 2.3 Big Data. 3 Method. 3.1 Case study. 3.1.1 Case study of Priest attack (Phishing-attack). 3.1.2 Case study of Scooter attack (Grab and run-attack). 3.1.3 Other interesting operation types. 3.2 Statistical methods. 3.2.1 Benford’s law. 3.2.2 Application of Benford’s law. 3.2.3 Quantiles. 3.2.4 Application of quantiles. 3.3 Rules. 3.3.1 Definition of rules. 3.4 Limits. 3.5 Big data. 3.5.1 Data visualization. 3.6 Fraud Detector. 3.7 Performance measurements. 3.7.1 Receiving Operating Characteristics curve. 3.7.2 Other measurements. 4 Results. 4.1 Results of case study. 4.1.1 Phishing attack - general characteristics. 4.1.2 Grab and run attack - general characteristics. 4.1.3 Characteristics in the studied Mobile Money system. 4.1.4 Operation types. 4.2 Results of rules. 4.3 Data visualization. 4.4 Results of limits. 4.5 Fraud injection in a data set. 4.6 Result of fraud detector and performance. 4.6.1 Accuracy and precision. 4.6.2 Receiving Operating Characteristics curves. 5 Analysis. 6 Conclusions and Future Work. References. 7 Appendix. 7.1 Appendix A, Benford’s law. 7.1.1 Requirements. 7.1.2 Conformity. 7.1.3 Z-statistics. 7.1.4 Basic digit test. 7.2 Appendix B, R-code. 7.3 Appendix C, Visualization results. | ||
| 606 |
_aFRAUDE BANCÁRIA _9276519 |
||
| 606 |
_aCRIME INFORMÁTICO _9301395 |
||
| 606 |
_aTELEFONE MÓVEL _9328293 |
||
| 606 |
_aESTATÍSTICA _9232358 |
||
| 606 |
_aMETODOLOGIAS _9341295 |
||
| 606 |
_aTESE _9334284 |
||
| 606 |
_aSUÉCIA _9334325 |
||
| 700 |
_aKAPPELIN _bFrida _9358017 |
||
| 701 |
_aRUDVALL _bJimmie _9358018 |
||
| 955 | _xOferta | ||