You Are Working in a Computer Forensic Lab

question 22

Multiple Choice

You are working in a computer forensic lab. A law enforcement investigator brings you a computer and a valid search warrant. You have legal authority to search the computer. The investigator hands you a piece of paper that has three printed checks on it. All three checks have the same check and account number. You image the suspect computer and open the evidence file with EnCase. You checks have the same check and account number. You image the suspect's computer and open the evidence file with EnCase. You perform a text search for the account number and check number. Nothing returns on the search results. You perform a text search for all other information found on the printed checks and there is still nothing returned in the search results. You run a signature analysis and check the gallery. You cannot locate any graphical copies of the printed checks in the gallery. At this point, is it safe to say that the checks are not located on the suspect computer?

• A) No. The images could be located a compressed file.
• B) No. The images could be embedded in a document.
• C) No. The images could be in unallocated clusters.
• D) No. The images could be in an image format not viewable inside EnCase.
• E) All of the above.

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Definitions:

Moving Average Forecast

A method used in forecasting that calculates the average of a series of data points over specific time intervals to identify trends.

Observable Trend

A noticeable movement or direction in data over a period of time that can be analyzed and used for forecasting.

Seasonality

The tendency of certain businesses or economic activities to fluctuate during specific times of the year due to changes in weather, holidays, or other recurring events.

Holt's Model

A forecasting technique that extends exponential smoothing to capture both trend and seasonality in historical data for future prediction.