Investigating fraud Mobile Telephony of Serbia

Short presentation about investigating fraud made by Mobile Telephony of Serbia. Author Milos Basaraba.

FraudMobile Telephony Of SerbiaTelecom SerbiaFraud investigationInvestigation
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Investigating fraud Mobile Telephony of Serbia

Created 3 years ago

Duration 0:15:02
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Short presentation about investigating fraud made by Mobile Telephony of Serbia. Author Milos Basaraba.
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Slide Content
  1. DO YOU REALY HAVE FRIENDS?

    Slide 1 - DO YOU REALY HAVE FRIENDS?

    • FRAUD DEMONSTRATION, MOBILE TELEPHONY OF SERBIA, PART II
    • you have friends!
  2. THE FRAUD PROBLEM

    Slide 2 - THE FRAUD PROBLEM

    • During the stay in Barcelona, the mobile phone with SIM card was stolen in January 2015. After that, next bill was received.
    • The amount of the bill is in Serbian dinars and it is approximately 2.530 $ or 2.223€.
  3. COLLECTING DATA FOR INVESTIGATION

    Slide 3 - COLLECTING DATA FOR INVESTIGATION

    • Data source: www.telekom.rs
  4. COLLECTING DATA FOR INVESTIGATION

    Slide 4 - COLLECTING DATA FOR INVESTIGATION

    • Data source: www.telekom.rs
  5. DATA INVESTIGATION SUMMARY

    Slide 5 - DATA INVESTIGATION SUMMARY

    • At first, we investigate summary sheet of all calls during the January 2015:
    • MOBILE OPERATOR CALCULATED 28 HOURS, 10 MINUTES AND 42 SECONDS !
  6. INVESTIGATION OF DETAIL OUTGOING PHONE TRAFFIC

    Slide 6 - INVESTIGATION OF DETAIL OUTGOING PHONE TRAFFIC

  7. INVESTIGATION DATA COMPARING

    Slide 7 - INVESTIGATION DATA COMPARING

    • TIME USED BY MOBILE OPERATOR
    • FOR CALCULATION
    • MOBILE OPERATOR CALCULATED 22 HOURS, 28 MINUTES AND 9 SECONDS MORE TIME THEN IT IS MAXIMUM POSSIBLE
    • CALCULATING DIFFERENCE
    • MAXIMUM POSSIBLE CALL DURATION
  8. INVESTIGATING CAUSES OF UNREAL TIME

    Slide 8 - INVESTIGATING CAUSES OF UNREAL TIME

    • In the detail list of outgoing roaming calls, there are overlaps of calls, so two or more calls are active at the same time!
  9. INVESTIGATING PHONE NUMBERS ON CALL LIST

    Slide 9 - INVESTIGATING PHONE NUMBERS ON CALL LIST

    • In the list of outgoing roaming calls, three numbers from Serbia are repeated over and over. We call these numbers:
    • 064/151-8550
    • 065/256-4984
    • 065/322-4406
    • LISTED CALLED NUMBERS DOES NOT EXCISTS
  10. THE END

    Slide 10 - THE END