Mobile Device Forensics

Mobile devices are becoming increasingly powerful and popular, and the average mobile phone will now hold considerable amounts of information.  Their increasing capability provides more opportunity to store and disseminate information.

Some mobile devices allow photographs or videos to be taken.  When a multimedia file is taken, some devices automatically embed the GPS location of the handset at that time.  This allows the location of the user at that particular moment to be established at a later date.

Multiple communication protocols including Bluetooth, WiFi and 3G enable the free transfer of information across international boundaries. Users can browse the internet, send and receive e-mail with attached documents, or post entries onto a blog and,  if that's not enough, removable media cards with huge storage capacities  can be inserted into the device allowing information to be exchanged quickly and discretely.

Similar to computers, but with a greater diversity and arguably far more powerful in terms of capability, the evidential value of these items must not be overlooked.  Whether the crucial evidence is stored on the handset or SIM card, CY4OR has the experience and expertise to extract and present this evidence.

CY4OR’s mobile devices team investigates hundreds of mobile phones each month. Our expert investigations include the production of call lists and contact information, the recovery of deleted SMS messages, a summary of mobile internet usage, and the production of photographs and videos.

Analysis of call data records

Call data records show calls made and received and provide the following data:

• Date of call
• Time of call
• Call duration
• Number making the call (originating) 
• Number receiving the call (terminating)
• IMEI - International Mobile Equipment Identity
• CI - Cell site identity number

These records can be invaluable in establishing relationships between defendants or determining wider locations such as in which town or city a call was made or received.  It is also possible to be more accurate in determining geographical location through cell site analysis.  When combined with other digital evidence such as CCTV or email, a conclusive arguement can be constructed.

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