Forensic-as-a-Service for Mobile Devices (Literature Survey) Prashant N. Ninawe 1 Prof. Shrikant B. Ardhapurkar 2 …..Department of Computer Technology Department of Computer Technology YCCE, Nagpur-441110, Maharashtra, India YCCE, Nagpur-441110, Maharashtra, India Abstract- Cloud computing is a relatively new concept that offers the potential to deliver scalable elastic services to many. The notion of pay-per use is attractive and in the current global recession hit economy it offers an economic solution to an organization’s IT need. Computer forensic is a relatively new discipline born out of the increasing use of computing and digital storage devices in criminal acts (both traditional and hi-tech). As per the survey of BI Intelligence there are 1.4 billion Smartphone in use by December 2013. With the increased availability of these powerful devices, there is also a potential increase for criminals to use this technology as well. Criminals could use smart phones for number of activities such as committing fraud over e-mail, harassment through text messages, communications related to narcotics etc. The data stored on smart phones could be extremely useful to analysts through the course of an investigation. Indeed mobile devices are already showing themselves to have a larger volume to probative information that is link to an individual with just basic call history, contact and text message data; smart phone contains even more useful information, such as e- mail, browser history and chat logs. Mobile devices probably have more probative information that can be linked to an individual per byte examined than most computers and this data is harder to acquire in a forensically proper fashion. This paper describes technical problems and challenges encountered in cloud for android mobile forensics. Keywords- cloud computing, digital forensic, mobile device forensic, cloud forensic, forensic challenges I. INTRODUCTION The cloud computing is a very popular topic in recent year. It includes the following key characteristic: agility, low cost in using device and location independence, virtualization, reliability, scalability and elasticity, performance and etc. All those features show fascinating benefit to companies. As they can get free from the worry about the investment on hardware and can setup up their business easily. There are three major type of cloud services delivery model: Infrastructure as a service (IaaS), Platform as a service (PaaS), and Software as a service (SaaS). Different type of delivery model provides different convenience. IaaS just like server-hosting services, but consumer do not need pay-for-hardware and maintain them anymore. They benefit much form the scalability and elasticity. PaaS is like service hosting, but consumers do not need to worry about the server out of working or not able to response to large number of request. They benefit much form the performance and reliability. SaaS look like the Representational State Transfer (REST) very much, and make consumers benefit from performance, multi-tenancy architecture and many other features. But two of the three models is share a weakness from the characteristics of the cloud computing. As consumer put their logical procedurals on the cloud, which mean that they do not own the control of the hardware specially for PaaS and SaaS. This is not friendly to digital forensic. Because traditional digital forensic is deeply depending on the media seized from the crime scene. At this point, there should be changes or enhancement for cloud computing to be friendlier with digital forensics. II. CLOUD COMPUTING Cloud computing as Fig. 1 makes a virtual pool of resources such as storage, CPU, network and memory too fulfill the user’s resource requirement and provides on demand (Pay per use) hardware and software without barriers. It can be named as dynamic computing because it provides resources when required (dynamically). Cloud computing manages the pool of resources automatically and dynamically through software and hardware [1]. Fig. 1 Cloud Computing Model There are mainly three types of Cloud Computing model, Private Cloud, Public Cloud and Hybrid Cloud: i. Private Cloud: It is a proprietary architecture subscribed by an organization, which provides hosted services to the users within the organization. This is protected by the firewall to form barrier against outside the world to access hosted services from the private cloud.\ ii. Public Cloud: It is not proprietary of any organization; the services provided in this clouds can be accessed by any organization. Prashant N. Ninawe et al, / (IJCSIT) International Journal of Computer Science and Information Technologies, Vol. 5 (6) , 2014, 7776-7778 www.ijcsit.com 7776