Table of Contents
What is the process of converting raw picture data to another format is referred?
demosaicing. The process of converting raw picture data to another format, such as JPEG or. TIFF.
How do we identify file is a graphics format if the forensic tools Cannot recognize it?
Explain how to identify an unknown graphics files format that your digital forensics tool doesn’t recognize. Each type of graphics file has a unique header containing information that distinguishes it from other types of graphics files.
What is the method used to hide data in graphic files?
Steganography is the technique of hiding secret data within an ordinary, non-secret, file or message in order to avoid detection; the secret data is then extracted at its destination. The use of steganography can be combined with encryption as an extra step for hiding or protecting data.
What is the starting offset position for the Jfif label in a JPEG file?
Offset 6 gives the label name for JPEG files with interchange format that is JFIF . With the hexadecimal FFD8, all the JPEG files have a starting offset of 0 that is offset 0. JPEG files with interchange format that is JFIF has starting offset at 2 that is offset 2.
What does the MFT header field at offset 0x00 contain?
What does the MFT header field at offset 0x00 contain? The MFT record identifier FILE.
What format below is used for VMware images?
The VMDK (Virtual Machine Disk) format is supported by many common virtual machine monitors, for example the VMware ESXi hypervisor. The VDI (Virtual Disk Image) format for image files is supported by the VirtualBox virtual machine monitor and the QEMU emulator.
What is the process in making a forensic image?
What is a Forensic image? A Forensic image is an exact copy of hard drive. This image is created using various third-party tools which can easily capture the image of a hard drive bit by bit without changing even a shred of data. Forensic software copies data by creating a bitstream which is an exact duplicate.
What are forensic image formats?
Supported Image File Formats Supported Forensic Image Formats EnCase® v1 – 8 Image File (EVF / Expert Witness Format) *.e01 Virtual Hard Disk File *.vhd Segmented Image Unix / Linux DD / Raw Image Files *.000, *.001 Single Image Unix / Linux DD/Raw Image Files *.dd; *.img; *.ima; *.raw.
What is necessary to make a raw image a forensic image?
Advantages of RAW for forensics In order to take advantage of a RAW file, the file must be processed. Exposure and color is adjusted using a processing program. The RAW data file still needs to be converted to a workable image file such as a TIFF for distribution, analysis, and advanced printing.
What is steganography Geeksforgeeks?
Steganography is a method of hiding secret data, by embedding it into an audio, video, image, or text file. It is one of the methods employed to protect secret or sensitive data from malicious attacks.
What encryption algorithm was used to hide an image in another cover image?
Research in hiding data inside image using steganography technique has been done by many researchers, for example in [6-10]. Warkentin et al. [6] proposed an approach to hide data inside the audiovisual files. In their steganography algorithm, to hide data, the secret content has to be hidden in a cover message.
What is steganography and how it works?
Steganography works by hiding information in a way that doesn’t arouse suspicion. One of the most popular techniques is ‘least significant bit (LSB) steganography. In this type of steganography, the information hider embeds the secret information in the least significant bits of a media file.
Which of the following is true about JPEG and TIFF files?
Which of the following is true about JPEG and TIF files? They have different values for the first 2 bytes of their file headers. When viewing a file header, you need to include hexadecimal information to view the image. When investigating graphics files, you should convert them into one standard format.
Which of the following reasons should you wipe a target drive?
When a target drive is wiped, it will remove all unwanted data that was previously stored on the drive to ensure old and redundant data does not get mixed with the acquired digital evidence.
What are the records in the MFT called?
Each file on an NTFS volume is represented by a record in a special file called the master file table (MFT). NTFS reserves the first 16 records of the table for special information.
What term is used to describe a disk’s logical structure of platters tracks and sectors?
Terms in this set (29) What term is used to describe a disk’s logical structure of platters, tracks, and sectors? A Master Boot Record (MBR) partition table marks the first partition starting at what offset?.
What are the concentric circles on platters where all the information is stored?
Storing the Data Tracks are concentric circles that surround the entire platter. Sectors are wedges that, when grouped together, form a track. Sectors contain a fixed number of bytes – usually 256 or 512 – and are grouped into clusters.
What is snapshot in VMware?
A VMware snapshot is a copy of the virtual machine’s disk file (VMDK) at a given point in time. Snapshots provide a change log for the virtual disk and are used to restore a VM to a particular point in time when a failure or system error occurs. Snapshots alone do not provide backup.
What is VMware image?
A Virtual Machine Image is a fully configured virtual machine used to create a MED-V image for deployment to your enterprise. Start the VM and install any applications that you need to include in the final image.
What is a .vmdk file?
vmdk file’s content is the virtual machine’s data, with a small portion allotted to virtual machine overhead. If the virtual machine is connected directly to a physical disk, rather than to a virtual disk, the . vmdk file stores information about the partitions the virtual machine is allowed to access.
What is a forensic image?
A Forensic Image is a comprehensive duplicate of electronic media such as a hard-disk drive. This exact duplicate of the data is referred to as a bit-by-bit copy of the source media and is called an Image. Images are petrified snapshots, that are used for analysis and evidence preservation.
What type of forensic images can be created in FTK Imager?
With FTK Imager, you can: Create forensic images or perfect copies of local hard drives, floppy and Zip disks, DVDs, folders, individual files, etc. Preview files and folders on local hard drives, network drives, floppy diskettes, Zip disks, CDs, and DVDs.
