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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 - PowerPoint PPT Presentation
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Issues Arising in Forensic Computer Examinations
Mike DicksonForensic AnalystSCDEA e-Crime
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Data Capacity
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1 kilobyte
= 1000
characters
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1 megabyte
= 1 million
characters
or 500
sheets of
paper (about
5 cm tall)
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1 gigabyte = 1 billion charactersor a pile of paper 50 metres tall
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400 gigabytes is about averageThat’s 20km of paper
Or 2 ½ Mount Everests
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The biggest hard drive commercially available today is2 terabytes, or 2 trillion characters
That’s two million packets of A4paper which would reach….
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…about 100 kilometers
Approx here to Stirling
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An average person can readthrough about 220 words perminute…
…which is about a
kilobyte of data
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So therefore…
Reading two terabytes of data would take the average person
2 x 1000 x 1000 x 1000 minutes
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Also known as 3800 years
The Nordic Bronze age started3800 years ago
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Hitachi have announced 4Tb drives for 2011
That’s 200km of paper
=
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Analyst and Investigator
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Encryption
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Identifying Devices
USB Phone (12Gb)
USB Watch (2Gb)
USB Subbuteo (22-32Gb)
USB Rubber Duck (2Gb)
USB Vibrator (128kb)
USB Teddy Bear (4Gb)
USB Teddy Bear (4Gb)
BMW M5 (8Gb)
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Virtual Computers or ‘The Cloud’
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Mike DicksonForensic Analyst
SCDEA e-Crime0131-335-6033
michael.dickson@scdea.pnn.police.uk
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