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Abnormal Detect: Finding the Suspect

Abnormal Detect: Finding the Suspect. Co-on Team Presented. Background Review. Yi Fu. Finding the suspect. Jialiang Wang. Yanni Li. Guohao Zhang. Problem. An embassy employee is suspected of sending data to an outside criminal organization from the Embassy

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Abnormal Detect: Finding the Suspect

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  1. Abnormal Detect: Finding the Suspect Co-on Team Presented

  2. Background Review Yi Fu • Finding the suspect Jialiang Wang Yanni Li Guohao Zhang

  3. Problem • An embassy employee is suspected of sending data to an outside criminal organization from the Embassy • The IP and Network traffic are recorded • Task • Identify which computer(s) the employee most likely used to send information to his contact • Characterize the patterns of behavior of suspicious computer use

  4. Source Data • Data

  5. Data Prepossessing • Data Filter • Example: • destIP: 37.170.30.250 has 9638 communications with ALL the sourceIP • unlikely to be the suspect’s contact • it can be filtered

  6. Data Prepossessing • Data size pattern

  7. Data Prepossessing • Abnormal Records

  8. Visualization metaphor • Time bar

  9. Visualization metaphor Prox data of building entrance

  10. Visualization metaphor Prox data of classified region entrance

  11. Visualization metaphor Network flow

  12. Data Explor • Overall view

  13. Stories found demo

  14. Results Results #31 10th Jan #56 29th Jan #21 23rd Jan

  15. Results Results #17 15th Jan #5 4th Jan

  16. Left to be Done • Suspect transfer function • Data size based on statistics • DestIP connecting times • Pattern based transfer function • Interactive data operations: filter etc. • Higher resolution: day-view • Office grouping • Automatic highest suspicious detect • More interactions

  17. Left to be Done • Focus+context method, using sigma lens to magnify to identify patterns

  18. Thank you!

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