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1 st International Workshop Social Computing, Behavioral Modeling & Prediction 2008. Attribution-based Anomaly Detection: Trustworthiness in an Online Community. Shuyuan Mary Ho i School, Syracuse University http://web.syr.edu/~smho/. Problem Statement. Insider Threats

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attribution based anomaly detection trustworthiness in an online community
1st International Workshop

Social Computing, Behavioral Modeling & Prediction 2008

Attribution-based Anomaly Detection: Trustworthiness in an Online Community

Shuyuan Mary Ho

iSchool, Syracuse University

http://web.syr.edu/~smho/

conceptual framework
Problem Statement

Insider Threats

  • refers to situations where a critical member of an organization behaves in a way that is against the interests of the organization, generally in an illegal and/or unethical manner.

Org. communications

Observation/attribution

Organizational

Norm

Intention

Social Network

Information

Behavior

Trustworthiness

meaning

attribute (assign)

B1

Borg

But, the real problem lies in A’s integrity (characteristics) contaminated by either internal or external factors

B2

A

B3

B’s expectation of

A’s ability/competence

as a result of observing A’s behavior

in org. communications

over time

Unknown

A’s social network

Bn

Conceptual Framework

Behavioral Anomaly Detection

what is trustworthiness
What is Trustworthiness?
  • A quality, disposition or characteristics of a person, influenced by intention
  • Defined as:
    • the generalized expectancy, a subjective probability, toward a target employee’s degree of correspondence between communicated intentions and behavioral outcomes that are observed and evaluated over time (Rotter, 1980 & 1967).
    • In other words, the degree to which the relationship between the target’s words and actions remain reliable, ethical and consistent, and any fluctuation in this relationship does not exceed the observer’s expectations over time (Hardin, 1996: 28).
  • My question is: What changes of behaviors reflect a downward shift in the trustworthiness of a critical member which signals possible insider threats in a virtual organization?

Behavioral Anomaly Detection

method the leader s dilemma game
Method: The Leader’s Dilemma Game

The target A’s behavioral change must be noticeable (distinctive) for others to perceive it.

The consistency between the target’s words and actions was evaluated by these observers (Kelley, 1973) over time until a given set of tasks were completed.

Consensus among B’s observation (perception) of target A must obtain.

Behavioral Anomaly Detection

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