Acc 626 slidecast

Concepts on Forensics for Information Technology
ACC 626 Slidecast

What is Forensics for IT?
Computer forensics and Digital Forensics
Computer Forensics – 80s-90s
Unformat, undelete, diagnose and remedy
Essentially data retrieval from computers to obtain evidence
Digital Forensics
Scientific methods to reconstruct events or anticipate unauthorized actions (DFRWS)
preservation, collection, validation, identification, analysis, interpretation, documentation and presentation of digital evidence(DFRWS)
Applies to all digital sources, i.e not limited to computers

Forensics for IT?
Many other IT devices capable of processing and storing data
Computer forensics does is no longer an appropriate term
It is the “process of acquiring, analyzing and reporting digital evidence” from information technology devices, this such as: computers, cellular phones, storage devices, networks, etc..(Lewis 2008)

Role and Application
Applicable and necessary in 3 types of cases
Crimes where IT is incidentally involved
Crimes where IT is the enabler
Crimes against IT systems
to support crime investigations which involve the complexity of information systems (Gottschalk)
Presented in “e-discovery”

Process and Steps

Techniques and Tools
IT Forensic Techniques
Search Techniques
Manual vs. automated
Search customization
Reconstructive Techniques
Log files analysis
System files analysis

Techniques and Tools
IT Forensic Tools and Software
Industry standard tools – Encase
Specialist tools – FATkit
Open source designed tools
Software developed to react rather than anticipate
Forensics tools for mobile devices and tablets

Key Issues
The Digital Evidence and the Legal Environment
Laws not written with digital evidence and IT crime scene in mind
Criminals are creating new ways to conduct IT enabled crime and to attack IT systems
Legal rights and privacy laws are sensitive in IT investigations

Key Issues
Research and Development
Rapid development of technology
Data and file formats
VOIP, P2P, Outsourcing, portable storage, the cloud
Lack of direction in development of IT Forensics
No guidelines and strategy
Need taxonomy, best practices and clear standards

Key Issues
Anti-forensics and Tools
Traditional techniques
Artefact wiping
Data overwriting
Data hiding
Advanced techniques
Footprint minimization
Exploitation of bugs in forensic software
Detection of IT forensic tools

Forensics for IT and Auditing
Integration between the two
Audit information can lead to investigation efficiency
“IT audit procedures can help facilitate an understanding of both the computing environment and corresponding controls” (Lombe)
Ex. Terminated employee, existence of backups

Thank You

Acc 626 slidecast

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