Digital Forensics Investigation Plan for Healthcare Cyber Crime
This paper presents a structured digital forensics investigation plan for HCC Partner, a major U.S. healthcare company that has detected a potential intrusion through its Snort IDS alerts. A suspicious email attachment downloaded by a database administrator appears to have compromised the company's information systems. Using the staircase model as a methodological framework, the paper outlines three core components of the investigation: identifying potential digital evidence through email tracing and forensic tools such as X-Ways Forensics and EnCase; preparing the search using the Forensic Toolkit (FTK); and legally seizing digital evidence in accordance with U.S. search warrant requirements and chain-of-custody protocols.
- Introduction and Incident Overview: HCC Partner breach scenario and investigation objectives
- Identifying Potential Digital Evidence: Email tracing, deleted file recovery, and malware scanning
- Preparing the Forensic Search: Using FTK to index, filter, and correlate evidence
- Seizing and Documenting Digital Evidence: Legal seizure, chain of custody, and photographic documentation
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What makes this paper effective
- The paper applies a recognized forensic methodology — the staircase model — as a structural backbone, lending coherence to each investigative step.
- It grounds abstract procedures in a concrete scenario (a suspicious email at a healthcare organization), making the technical content accessible and applied.
- Specific tools (X-Ways Forensics, EnCase, FTK) are named and justified, demonstrating awareness of industry-standard forensic software.
- Legal considerations (search warrants, chain of custody, admissibility) are integrated naturally rather than treated as an afterthought.
Key academic technique demonstrated
The paper demonstrates applied problem-solving by translating general forensic principles into a step-by-step operational plan for a specific organizational context. Each section builds logically on the last — from identifying evidence, to searching for it, to legally securing it — mirroring how a real incident response unfolds.
Structure breakdown
The paper opens with a scenario description that establishes the problem, then introduces the staircase model as the investigative framework. Three numbered subsections follow, addressing evidence identification, search preparation, and evidence seizure respectively. The paper concludes with documentation procedures and a single APA-formatted reference. It is concise and task-oriented, appropriate for an applied forensics assignment at the undergraduate level.
Introduction and Incident Overview
HCC Partner is a leading healthcare company in the United States. Management has detected a potential intrusion in its systems based on alerts from the company's Intrusion Detection System (IDS) logs, raising serious concerns about system reliability. Analysis reveals that HCC uses the Snort IDS running on a Linux system. In addition, the HCC database administrator received and downloaded a suspicious email purportedly from the Human Resources Department; after opening the attachment, the system began behaving abnormally.
The objective of this investigation plan is to analyze the HCC database server, the network system, and other workstations suspected of contributing to data leakage. The plan will assess whether evidence of a data breach exists and outline the procedures required to investigate and preserve that evidence.
The investigation uses the staircase model as its methodological framework, because this model supports a practical, systematic approach to forensic investigation. Digital forensic investigators typically work from the bottom of the model upward in a step-by-step manner (Casey, 2011).
Identifying Potential Digital Evidence
The first strategy for identifying potential evidence is to trace the source of the email attachment from the Human Resources Department. All email communications and attachments are typically stored on the database server. The next step is to examine the hard disk of the Human Resources computer to verify whether the email was in fact sent from that department. This can be accomplished by searching the company's database server for all emails sent to the database administrator on the date the message was received.
While manual email searching can be time-consuming, the use of X-Ways Forensics software is recommended for automated email searching. If the email or its attachment has been deleted from the hard disk or database, forensic software should be used to recover it. EnCase is recommended for this purpose, as it has the ability to collect data from a wide range of devices and unearth relevant evidence. If the file was sent from the HR department, the next step is to scan it for malicious software. A premium antivirus application should be used to determine whether the file contains malware. If malware is detected, this constitutes evidence that the file was sent deliberately to disrupt the company's information systems. At that point, the entire information system must be scanned to assess the full scope of the compromise.
Reference
Casey, E. (2011). Digital evidence and computer crime: Forensic science, computers and the Internet. Academic Press.
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