Why is a write-blocker required when acquiring a disk image?
Hardware write-blockers commonly are used when acquiring a suspect’s media. These hardware write-blockers will prevent Windows or other operating systems from writing to that drive. If a drive is connected to a system without a write-blocker and changes were written to the drive, the drive is contaminated.
How does a hardware write-blocker work?
Software and hardware write blockers do the same job. They prevent writes to storage devices. As determined by NIST’s Software Write Block specifications, a software write block tool operates by monitoring and filtering drive I/O commands sent from an application or OS through a given access interface.
What are the main challenges of write blocking?
Challenges of using Hardware Write Blockers:
- Hardware write blocking devices are very expensive.
- They are awkward to use since they require a physical connection and a different connector for each type of interface for IDE, SCSI, USB, etc.
What are the three major phases of digital crime scene investigation?
The process is predominantly used in computer and mobile forensic investigations and consists of three steps: acquisition, analysis and reporting.
What program serves as the GUI front end for accessing sleuth kit’s tools?
Autopsy® is an easy to use, GUI-based program that allows you to efficiently analyze hard drives and smart phones.
How does a write blocker work on a hard drive?
A hardware write blocker (also referred to as a forensic bridge) is a device that sits between the host computer and hard drive to be connected to the system. Most hardware write blockers support multiple interfaces and allow the end user to connect IDE and SATA internal hard drives or USB and FireWire external hard drives to a host system.
Do you need write blocker for FTK Imager?
NOTE: FTK Imager does not guarantee data is not written to the drive, so it is important to use a write blocker like the Tableau T35es. Click Add… to add the image destination.
Which is the best write blocker for PC?
Two popular hardware write blocker manufacturers are Tableau and WiebeTech. These hardware write blockers are fairly inexpensive and can be used very easily. Well worth the investment. The NIST has developed a test plan for evaluating hardware write blockers.
Is there a write blocker for forensic software?
Software write blockers are versatile and come in two flavors. One is a module that “plugs” into the forensic software and can generally be used to write block any port on the computer. The other method of software write blocking is to use a forensic boot disk. This will boot the computer from the HD.