Abstract: Digital forensics is the process in which a computer is forensically examined in order to ascertain what it has been used for, and to examine whether any contraband material has been stored on the device. As this is a creative process, relying heavily on the skills and intuition of the examiner, it is difficult to provide tool support. It is possible, however, that the exploratory and interactive nature of information visualisation can be utilised in tool format to increase the efficiency of digital forensic investigations. This paper will discuss potential approaches to utilising information visualisation in digital forensics. Keywords: digital forensics, information visualisation, computer security Introduction Digital forensics …show more content…
These systems analyse the flow of traffic across a computer network and are designed to alert the network administrator to any anomalies on the network which could point to an intrusion attempt. In a large network, this flow of traffic can generate huge logs in the Intrusion Detection System. These are next to impossible for a person to manually analyse, and as such visualisation techniques are often applied. In this way, the user can quickly see when traffic on the network begins to differ from what is expected as …show more content…
This will allow the user to quickly see when certain activities occurred on the device, and whether they were in close proximity to any other events of importance. The exploratory nature of this program will allow the user to discover whether any events may be linked to each other, and if they may have occurred as the direct consequence of another event. The software is written to automatically import a dataset which has been pre-processed using the Autopsy [8] software. This software analyses a device image and extracts key information such as software installation times, EXIF data etc. This information is then stored in an SQLite database. It is this database that is used by our software. Autopsy is used to pre-process the device image as this is a complex task, and attempting to include this functionality in our software would be a duplication of effort and take a substantial amount of time to implement. In addition to the Autopsy dataset, the software allows the user to add their own events to the dataset. This is useful, as the user may have external knowledge which is not reflected by the dataset. By including this knowledge, new patterns may become evident, such as website visits which show the device owner was planning to commit a crime for a while before it
Forensics investigations that require the analyzation and processing of digital evidence can be influenced both positively and negatively by a number of outside sources. In this paper, we will explore how physical security plays a role in forensics investigations activities. We will start by examining how physical and environmental security might impact the forensics investigation process. Next, we will discuss the role that physical and logical security zones play in supporting effective forensics activities. We will illustrate how centralized and decentralized physical and environmental security affects the forensics professional’s approach toward the investigation. Lastly, we will evaluate some potential areas of risk related to the physical security of our case study organization, Widget Factory, identified in Attachment 1.
Digital forensics can be broken down into three phases; acquisition, analysis, and presentation. The acquisition phase is where the data is saved in a way that it can be analyzed latter. Because it is not known at the time what data is or is not valuable to the case, all data is saved. In the analysis phase, the data is examined and placed into three major categories; inculpatory, exculpatory, or signs of evidence tampering (Carrier, 2002). Tools are used in this phase that are able to analyze for the list directory contents, deleted files, and recover the deleted files. In the presentation phase, the data has been documented in a way that it can undergo a peer review. When deleted files are recovered, the analyst must show how they were found because they were ...
These warnings can help users alter their installation’s defensive posture to increase resistance to future attacks. An intrusion detection system is comparable to a burglar alarm system. The car locks to protect the vehicle from theft. In the event someone compromises the lock, the burglar alarm detects this compromise and alarms the owner.
Technologies are advancing in today's world where more information is being generated, stored and distributed through digital gadgets. This requires investigators and forensic expert to increase the use of digital evidence gathering as a tool to fight against cyber-crime (International competition network, n.d.).
Solomon, M. G., Rudolph, K., Tittel, E., Broom, N., & Barrett, D. (2011). Computer Forensics Jumpstart (2nd ed.). Indianapolis, IN: Wiley Publishing Inc..
Today, we have lots of technology and all sorts of devices to help get to the bottom of figuring out if someone is guilty or not. These devices can find o...
In 1980, James Anderson’s paper, Computer Security Threat Monitoring and Surveillance, bore the notion of intrusion detection. Through government funding and serious corporate interest allowed for intrusion detection systems(IDS) to develope into their current state. So what exactly is IDS? An IDS is used to detect malicious network traffic and computer usage through attack signatures. The IDS watches for attacks not only from incoming internet traffic but also for attacks that originate in the system. When a potential attack is detected the IDS logs the information and sends an alert to the console. How the alert is detected and handled at is dependent on the type of IDS in place. Through this paper we will discuss the different types of IDS and how they detect and handle the alerts, the difference between a passive and a reactive system and some general IDS intrusion invasion techniques.
In a world where people have become dependent on technology, we can access any type of information as well as provide information to the Internet. This causes a great amount of knowledge for anyone to use to their content, whether it be for malicious or benign purposes. However, whether the reasons are behind this, there is always a trace of something left behind in an electronic devices history. By tapping into a person’s history, one can found out exactly what a person does when they are online. In Singer’s essay, he stated that it is possible to create a ‘Panopticon’ where the government has a visual observation on its citi...
The use of computers in homes, schools, offices, and other places has increased in the past few years due to technological developments. As computers have become important components of modern communication, their increased use has also led to the emergence of computer crimes. Computer crimes basically involve the use of a computer system to carry out an illegal activity. In attempts to lessen the frequency and impact of computer crimes, law enforcement agencies use computer forensic to investigate these offenses. Actually, computer crimes are governed by specific laws and dealt with through conducting a computer forensic investigation (Easttom & Taylor, 2011, p.337). Notably, a computer forensic investigation is usually carried out through the use of computer forensic tools, which help in collection of evidence based on the specific offense.
Digital Forensic is described as “ a forensic science encompassing the recovery and investigation of materials found in digital devices “ (“Introduction to Digital Forensics,” 2011). The objective of digital forensics is to implement a well-structured investigation while preserving a documented chain of custody and evidence custody form to know what really occurred on digital devices and who was accountable for it.
The data a computer forensics acquisition tool collects is stored as an image file in one of three formats. Two formats are open source and the third is proprietary. Each vendor has unique features, so several different proprietary formats are available. Depending on the ...
What did they do ? Before we talk about it any further, we have to know some definitions that we use in digital forensics and digital evidence, not only two of them but the others too. This chapter will explain about it . Before we talk about it any further, we have to know the definition of what we are talking about. In the introduction we already know what digital forensic and digital evidence shortly are. In this chapter, we will more explore what they are, and some state that we found when we search about digital forensic and digital evidence. Computer forensics is a broad field and applied to the handling of crimes related to information technology. The goal of computer forensic is to securing and analyzing digital
Technology has opened new encounters and opportunities for the criminal justice system. There are so many new practices of criminal activity, such as computer crimes. There are different types of computer crimes that many people become victims of every day. Computer crime is any crime that involves a computer and a network. The computer may have been used in the commission of a crime, or it may be the target ("Computer Crime: Chapter 2: What Are the Crimes?", n.d.). Crimes such as data diddling, pump and dump, social engineering and spoofing are computer crimes. Even though these crimes are difficult by privacy issues, the new technology has made investigations and prosecutions well organized and effective. Though views are different on the pros and cons of specific technological changes in the criminal justice system, there is an agreement the system has changed affectedly ("Effects of Technology in Criminal Justice | eHow", n.d.).
The biggest challenge investigators face and who is involved with high tech crime is the fast-paced constant evolving nature of technology. When companies come out with new devices or new versions of old devices which is almost all the time, and those who gather digital evidence must remain current to be able to locate and preserve all potential evidence. As technology evolves the capacities of these devices will rapidly increase while their form factor grows continually smaller. Investigators must preserve digital evidence to make sure it is suitable for presentation in court as well. Investigators must first never change a crime scene or alter evidence. It is their goal to document and preserve the scene exactly as it was when the crime occurred. Extreme caution and care is needed because the mere act of documenting or cataloging a crime scene means that investigators are interacting with the scene. The second concern is the physical fragility of the evidence. Care must be taken to keep items from getting wet, stepped on etc, this can also be applied to digital evidence. Investigators have been able to examine hard disk drives that have been through fires because the drives are usually air and water tight and impervious to temperatures into the thousands of degrees. The third issue is that digital evidence can be lo...
As a result, “technologies involved in crime analysis and their effectiveness for crime reduction and control” (Condon & Sanders, 2017, pp.239). The article has it own weakness since it does not consider the improper use of technology by the offenders to commit crime. It mainly considers the use of technology by the police and their effectiveness. There is a lack of the understanding of how to let police search offender’s technology without warrants. As a result, making this topic need of further research because increase use of technology has altered the way police use their technology.