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If the suspect computer is off, then, do not turn it on. Do not click with the mouse or pressing any key on the keyboard. If the suspect computer is on, then do not turn it off. Look carefully all the details in the scene Keep out unauthorized personnel to the scene For them, basic techniques to secure the crime scene are: If the scene is not properly secured, then the evidence could be contaminated. Securing the crime scene (the place where a crime has been committed) involves protecting evidence that can be found in the scene. The phases of the digital forensic process are: Protect the crime scene, collect the evidence, and establish the chain of custody and examination of the evidence. 2.2 Phases of the digital forensics process Memory cards and other storage devices (National Institute of Justice, 2010). Office documents (Word, Excel, Power point)ĭigital evidence can be found in the following devices:
Content or electronically stored, for example: Tracing the origin 2.1- What is Digital Evidence?Īny document, file, record, data, etc. Two of these techniques are:ġ- Determine who used the computer? How was used? When and why?Ģ- Determine who has a remote user on the computer from someone else? Thanks to these techniques’ researchers can discover how a computer was used to commit a crime.
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This implies that those involved in this new and necessary discipline must be professionals with high ethical standards and respect for institutions, for in them is support decisions on the events analysed (National Institute of Justice, 2010).įorensic investigators have professional tools and techniques that help them recreate what happened with a computer or other electronic device. 2.0- What is Digital Forensics?ĭigital Forensics is IT (Information Technology) specialization that assumes the necessary duties related with finding exhibit (evidence) at the place where a crime has been committed (crime scene) Digital forensic duties include: identify, collect, preserve, analysis, interpret, document and present evidence.
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Also, I will describe some forensic software and hardware and the importance of suitable forensic labs. In this report, I am going to explain what digital forensics is. It is here that the need arises for digital forensics. Therefore, it must use appropriate mechanisms for the collection, preservation, protection, analysis and presentation of digital evidence stored in electronic devices. For this reason, when a crime is done, the crime information is stored digitally. So, with the rise of cybercrime, digital forensics is increasingly gaining importance in the area of information technology. Because of this, the computer security of these companies has been violated, and it is here at this point when digital analysis forensic is needed to discover cybercriminals. So, with the rise of cybercrime, it has become critical to increase and develop computer systems security.Įach time, the techniques used by cybercriminals are more sophisticated, making it more difficult to protect corporate networks. In turn, the Internet has brought many benefits, but the internet has also contributed to the rise of cyber-crime.
This has allowed the development of the internet. There are two types of metadata: file system metadata and application (or file) metadata.Nowadays the use of computers is increasing more and more. Ever since examiners figured out that there might be more to a file than meets the eye, they have been interested in Metadata, the information that describes or places data in context, without being part of the data that is the primary focus of the user.
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It is important for forensic examiners to understand the Windows startup process for a number of reasons beyond simply interrupting the boot process to view and document the CMOS configuration. Whether investigating child pornography, intellectual property theft, or Internet Relay Chat (IRC) bot infection, it is a safe bet that knowledge of Windows operating systems, and its associated artifacts, will aid investigators in their task. It is not surprising that the majority of systems that digital investigators are called upon to examine run a Windows operating system.
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By understanding how to aggregate and correlate data on Windows systems, digital investigators are better able to get the “big picture” (such as an overall theory of user action and a timeline), as well as overcoming specific technical obstacles. An important aspect of conducting advanced forensic analysis is understanding the mechanisms underlying fundamental operations on Windows systems such as the boot process, file creation and deletion, and use of removable storage media. This chapter provides technical methods and techniques to help practitioners extract and interpret data of investigative value from computers running Windows operating systems.