Evidence integrity
needs to be protected in order to make it admissible in the court of law
. Digital evidence is more revealing, but it is fragile; it can easily be tampered with or modified. There are different techniques available to protect the integrity of digital evidence.
Why is it important to maintain the integrity of the evidence?
Protecting the integrity of evidence collected is
vital in law enforcement
. If the integrity of the evidence is in doubt, its use in legal proceedings could be jeopardized, possibly allowing a guilty person to escape prosecution.
How do you preserve computer evidence at a crime scene?
Drive Imaging
Imaging a drive is a forensic process in which an analyst creates a bit-for-bit duplicate of a drive. This forensic image of all digital media helps retain evidence for the investigation.
How do you preserve digital evidence?
- Document Device Condition. …
- Get Forensic Experts Involved. …
- Have a Clear Chain of Custody. …
- Don’t Change the Power Status. …
- Secure the Device. …
- Never Work on the Original Data. …
- Keep the Device Digitally Isolated. …
- Prepare for Long-Term Storage.
What is the integrity of evidence?
Evidence integrity
needs to be protected in order to make it admissible in the court of law
. Digital evidence is more revealing, but it is fragile; it can easily be tampered with or modified. There are different techniques available to protect the integrity of digital evidence.
How do you maintain integrity of evidence?
In an effort to provide proof that the evidence was not tampered with, a hash of the evidence should be provided before and during, or after, an acquisition. In Kali Linux, we can use
the md5sum command followed
by the path of the device, to create an MD5 hash of the evidence/input file.
What is chain evidence?
Note: parentTerm.TermNote. Definition(s): A process
and record that shows who obtained the evidence
; where and when the evidence was obtained; who secured the evidence; and who had control or possession of the evidence.
What is the evidence custodian’s responsibility?
An evidence custodian logs and
oversees evidence held by a law enforcement agency
. … Key responsibilities including accurately logging evidence as it comes in and goes out to ensure proper chain-of-custody.
What is comparison of evidence?
Comparisons are
made to find out whether a known and a suspect item or substance share a common origin
. Did the fingerprint, hair, or blood come from the suspect? … Crime-scene investigators use evidence to create linkage, that is, a connection between a suspect and a person, place, or object.
What is COC chain of custody and why is it important for evidence integrity?
Its key objective is
to ensure that the digital evidence presented to the court remains as originally collected
, without tampering. The chain of custody is important for admissible evidence in court. Without a chain of custody, the opposing attorney can challenge or dismiss the evidence presented.
How do you establish that the collected evidence is real?
The process of determining whether evidence is worthy is called
authentication
. Authentication is actually a two-step process, with an initial examination of the evidence to determine that it is what its proponent claims and, later, a closer analysis to determine its probative value.
What are the legal challenges of digital evidence?
Presenting digital forensic evidence at court has proved to be challenging, due to factors such
as inadequate chain of custody, not maintaining legal procedures and inadequate evidential integrity
. Following legal procedures in evidence gathering at a digital crime scene is critical for admissibility and prosecution.
What type of evidence are photographs?
Demonstrative Evidence
An object or document is considered to be demonstrative evidence when it directly demonstrates a fact. It’s a common and reliable kind of evidence. Examples of this kind of evidence are photographs, video and audio recordings, charts, etc.
Why is it difficult to collect relevant digital evidence?
Digital evidence is
volatile and fragile
and the improper handling of this evidence can alter it. Because of its volatility and fragility, protocols need to be followed to ensure that data is not modified during its handling (i.e., during its access, collection, packaging, transfer, and storage).
Where do you store digital evidence?
Where can digital evidence be stored? Usually it can be stored on a
hard disc drive
or a solid state drive of a computer or external storage units including CDs and DVDs. Flash memory of peripheral devices such as mobile phones, USB pen drives and camera memory cards are also used to store digital evidence.
How can we preserve evidence?
Storing Evidence
Investigators should not package moist evidence until it is thoroughly dry and or seal collection bags or envelopes prematurely. Most evidence should be stored
at room temperature
, unless it is liquid evidence, in which case it should be refrigerated and packaged in a sterile glass or plastic bottle.
