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Issues Arising in Forensic Computer Examinations. Mike Dickson Forensic Analyst SCDEA e-Crime. Data Capacity. 1 kilobyte = 1000 characters. 1 megabyte = 1 million characters or 500 sheets of paper (about 5 cm tall). 1 gigabyte = 1 billion characters

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Issues arising in forensic computer examinations

Issues Arising in Forensic Computer Examinations

Mike Dickson

Forensic Analyst

SCDEA e-Crime

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Issues arising in forensic computer examinations

Data Capacity

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Issues arising in forensic computer examinations

1 kilobyte

= 1000

characters

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Issues arising in forensic computer examinations

1 megabyte

= 1 million

characters

or 500

sheets of

paper (about

5 cm tall)

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Issues arising in forensic computer examinations

1 gigabyte = 1 billion characters

or a pile of paper 50 metres tall

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Issues arising in forensic computer examinations

400 gigabytes is about average

That’s 20km of paper

Or 2 ½ Mount Everests

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Issues arising in forensic computer examinations

The biggest hard drive

commercially available today is

2 terabytes, or 2 trillion characters

That’s two million packets of A4

paper which would reach….

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Issues arising in forensic computer examinations

…about 100 kilometers

Approx here to Stirling

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Issues arising in forensic computer examinations

An average person can read

through about 220 words per

minute…

…which is about a

kilobyte of data

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Issues arising in forensic computer examinations

So therefore…

Reading two terabytes of data would take the average person

2 x 1000 x 1000 x 1000 minutes

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Issues arising in forensic computer examinations

Also known as 3800 years

The Nordic Bronze age started

3800 years ago

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Issues arising in forensic computer examinations

Hitachi have announced 4Tb drives for 2011

That’s 200km of paper

=

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Issues arising in forensic computer examinations

Analyst and Investigator

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Issues arising in forensic computer examinations

Encryption

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Issues arising in forensic computer examinations

Identifying Devices

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Virtual computers or the cloud
Virtual Computers or ‘The Cloud’

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Issues arising in forensic computer examinations

Mike Dickson

Forensic Analyst

SCDEA e-Crime

0131-335-6033

michael.dickson@scdea.pnn.police.uk