Why is slack space a vulnerability?
5) Slack Space: A file system may not use an entire partition. The space after the end of the volume called volume slack that can be used to hide data. The space between Partitions is also vulnerable for hiding data, file slack space is another hidden storage.
What is the difference between slack space and free space?
Unallocated space, also called free space, is defined as the unused portion of the hard drive; file slack is the unused space that is created between the end-of-file marker and the end of the hard drive cluster in which the file is stored.
What is slack space data?
Slack space is the leftover storage that exists on a computer’s hard disk drive when a computer file does not need all the space it has been allocated by the operating system. … Computers with hard disk drives store data in a sealed unit that contains a stack of circular, spinning disks called platters.
Why slack space is so important to the forensics investigators?
Slack space is an important form of evidence in the field of forensic investigation. Often, slack space can contain relevant information about a suspect that a prosecutor can use in a trial. … This information could be extracted by forensic investigators using special computer forensic tools.
Slack space can be used to hide data from the operating system and other users. While some forms of data hiding are easily detectable, others are subtle and require an experienced forensic practitioner to discover the hidden data.
What is slack space on a hard drive?
Slack space is another source of unallocated space on a hard drive. Slack space is created when only a portion of space allocated to save information (called a cluster) is used. For instance, say a file size is 25 kb and the computer allocates a 32 kb cluster in which to save the data.
Is anything ever really deleted from your computer?
When you delete a file on your computer, it disappears, but have you ever wondered if it’s really gone? The short answer, yes. The long answer, no. Instead of being scrubbed from your hard drive, it’s moved to your computer’s Recycle Bin, and there it sits until you delete it from there as well.
What is the order of volatility?
The order of volatility is the sequence or order in which the digital evidence is collected. The order is maintained from highly volatile to less volatile data. Highly volatile data resides in the memory, cache, or CPU registers, and it will be lost as soon as the power to the computer is turned off.
How can slack space be used to hide files?
The hidden data in slack space is the product of the storage capacity of the file system and the whole computer system. Slack space data hiding technology makes full use of the physical properties of the formatted storage medium to hide the data.
How does slack space work?
File Slack, also called ‘slack space’, is the leftover space on a drive where a file is stored. This space remains empty or left over because each cluster on a disk has a storage threshold and files are random sizes. Therefore, the files only fill a part of the hard drive portion.
How do you work out slack space?
1 Answer. FileSize / cluster size (in bytes) = # clusters needed. If (FileSize modulo cluster size in bytes <> 0), add 1 additional cluster needed. Note that, even though disk drives are given in 1KB = 1000 bytes, the cluster sizes are based on 1024 bytes per KB, so you need to use that in your calculations.
What is RAM Slack and file Slack?
RAM Slack is defined as the slack space in the last written sector of a file, while file slack is defined as the unwritten sectors left in a cluster.