Mobile Forensics - Mobile Device Evidence

Mobile device forensics is a branch of digital forensics relating to recovery of digital evidence or data (and deleted data) from a mobile device under forensically sound conditions. ... Mobile devices can be used to save several types of personal information such as contacts, photos, calendars and notes, SMS and MMS messages.

Mobile devices can be used to save several types of personal information such as contacts, photos, calendars and notes, SMS and MMS messages. Smartphones may additionally contain video, email, web browsing information, location information, and social networking messages and contacts. Mobile device forensics is best known for its application to law enforcement investigations, but it is also useful for military intelligence, corporate investigations, private investigations, criminal and civil defense, and electronic discovery. As mobile device technology advances, the amount and types of data that can be found on a mobile device is constantly increasing. Evidence that can be potentially recovered from a mobile phone may come from several different sources, including handset memory, SIM card, and attached memory cards such as SD cards.

Traditionally mobile phone forensics has been associated with recovering SMS and MMS messaging, as well as call logs, contact lists and phone IMEI/ESN information. However, newer generations of smartphones also include wider varieties of information; from web browsing, Wireless network settings, geolocation information (including geotags contained within image metadata), e-mail and other forms of rich internet media, including important data—such as social networking service posts and contacts—now retained on smartphone 'apps'.

Although not technically part of mobile device forensics, the call detail records (and occasionally, text messages) from wireless carriers often serve as "back up" evidence obtained after the mobile phone has been seized. These are useful when the call history and/or text messages have been deleted from the phone, or when location-based services are not turned on. Call detail records and cell site (tower) dumps can show the phone owner's location, and whether they were stationary or moving (i.e., whether the phone's signal bounced off the same side of a single tower, or different sides of multiple towers along a particular path of travel).[9] Carrier data and device data together can be used to corroborate information from other sources, for instance, video surveillance footage or eyewitness accounts; or to determine the general location where a non-geotagged image or video was taken.

There is growing need for mobile forensics due to several reasons and some of the prominent reasons are:

· Use of mobile phones to store and transmit personal and corporate information

· Use of mobile phones in online transactions

· Law enforcement, criminals and mobile phone devices

* Divorce and litigation

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