This presentation illustrates proven data analytics workflows applied in various types of investigations, and how to establish them to make your investigations more efficient and effective.
You will learn well-proved data analytics workflows, including understanding, cleansing, optimizing, analyzing your data and reporting the results.
3. Jörn Weber
Certified Fraud Investigator
19 years experience—German law
enforcement
Since1999 Managing Partner at
corma GmbH:
Solution provider
Partner for corporate security
About Me
3
4. About corma GmbH
4
Stops suspects by:
analytical investigations
operative investigations
Saves time by:
online research
online monitoring
Increases efficiency
and saves money by:
data analytics
global intelligence
solutions
14. corma Workflow in 3 Steps
1. Chain of custody
a) Record all your steps
i.e., in a Word document
Software: CaseNotes, OneNote by Microsoft
b) Store original data in a secure area
c) Create digital fingerprints: MD5 Hash
http://md5deep.sourceforge.net
www.bitdreamers.com (Checksum Verifier)
Compare file content (UltraCompare)
d) Work with a copy of the original data only
Understanding Data
14
15. 2. Identify data formats
a) Research
www.file-extensions.org
www.filext.com
www.fileinfo.com
.gpi
.bqy
.blb
Understanding Data
15
Garmin Point of Interest file
BrioQuery database file
ACT! database file
16. 2. Identify data formats
b) View (read only)
www.uvviewsoft.com
Understanding Data
16
17. 2. Identify data formats
c) Deep view (editable)
www.ultraedit.com
Understanding Data
17
18. 3. From raw data to smart structured data
Understanding Data
18
Develop first ideas for analytical
approach
24. Why should data be cleansed:
Reliable analysis results are required.
Data cleansing saves time that otherwise
would come up during the analysis
process.
Reduce unwanted deviations and
variations.
Identify entities (e.g., person,
organization, address).
Insights often lead to further findings.
Cleansing/Standardizing Data
24
25. Fast and flexible handling of large
quantities of data
Flexible import from various data sources
Intuitive research
Analyses, calculations, statistics
Business Intelligence
Ad hoc reporting
25
Solution
26. Combine different data formats
Fix data quality issues
Identify missing data
Optimize link analysis results
26
With InfoZoom you can
36. Address verification—service
provider or software (for large amounts
of data):
AddressDoctor
www.addressdoctor.com
Experian
www.qas-experian.com.au
Enriching & Validating Data
36
42. Analytics … yes … but structured:
Identify needed analytical steps.
Develop “questions” to data.
What has prompted the need for the
analysis?
What is the key question that needs to be
answered?
How to create evidence out of data?
Visualize your thinking!
Analyzing Data
42
43. Analytical techniques
Chronologies and timelines (understand
timing and sequence of events)
Sorting (categorizing and hypothesis
generation)
Ranking, scoring, prioritizing (determine
which items are most important)
Network analysis—analyze relationships
between entities (e.g., people,
organizations, objects)
Analyzing Data
43
44. Best practice:
Document processes in intranet/wiki
Select the right tool for each task
Train the users
Keep the users “busy”
Look out for new solutions
Analyzing Data
44