Mobile Phone Forensics � A Brief Introduction

Mobile Phone Forensics or Cell Phone Forensics is getting better, 
day by day. Its now commercially available through certain 
specialist companies, (Disklabs, ( 
http://www.mobilephoneforensics.com), Evidence Talks, 
(http://www.evidencetalks.com), and ICG Inc, 
(http://www.icginc.com)), and is no longer just being used for the 
most high profile murder enquiries, but by individuals checking to 
see if their partner or lover has been cheating on them, by Human 
Resources, who need to prove if that phone call was actually taken, 
or by Private Investigators who are checking to see if the client 
was where they say they were at a specific time. Above are of 
course, just a few of the hundreds of examples of why mobile phone 
forensics is becoming more and more important in the lives of the 
military, investigative agencies, (police forces, security agencies, 
private investigators), human resources and individuals.

These days, along with the computer, it's the police officers first 
point of call. Where are you likely to record everything? Where are 
the records of wrong doings going to be stored? Even if you are not 
the sort of person to record wrong doings, human nature states that 
you will tell at least someone. On a computer, they could be stored 
within your PST file,(Microsoft Outlook personal storage file), your 
EDB file, (Microsoft Exchange storage file),  your NSS, (Lotus 
Notes), your MSG, (Microsoft Outlook Express), and your EML, 
(generic email files), amongst others. All these records are kept 
digitally on various storage devices, be they mobile phone SIM 
cards, perhaps mobile phone 3G USIM cards, the generic mobile phone 
memory or internal memory cards; mainly MMC memory cards, but not 
exclusively. Nowadays, the forensic investigator doesn't have to 
just rely on his mobile phone investigative resources, but has to 
have a sound knowledge of evidence handling, write-blocking and 
general computer forensics, to ensure that a full examination of all 
available data has been achieved for the client in a sound and 
forensically correct manner.

A more recent development in this technology is the cellular 
transmitter location, which is used to assist agencies in 
pinpointing the approximate whereabouts of the investigated. This 
sort of investigation technique was first used in a very high 
profile case in the United Kingdom, the murder of two young girls in 
a town called Soham called Jessica Chapman and Holly Wells, 
(http://news.bbc.co.uk/1/hi/england/2201146.stm). This technology is 
relatively new and although proved in a British court of law, does 
not necessarily mean that it is accepted throughout the world. There 
are of course downsides to this technology. Simply by passing the 
mobile phone in question to a colleague or accomplice with a 
disregard for the law would mean that the phone in question would be 
in another place at the time of a phone call, and therefore not be 
at the scene of the crime in question. There is also the problem 
with `Pay-As-You-Go' type of phones, which have no legal tie to the 
owner. This is something which is still to be addressed, and will, 
no doubt for time immortal.


http://www.disklabs.com
http://www.mobilephoneforensics.com


"If the automobile had followed the same development cycle as the 
computer, a Rolls-Royce would today cost $100, get one million miles 
to the gallon, and explode once a year, killing everyone inside."
- Robert X Cringely









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