Digital Forensics Questions
The difference between logical and physical acquisition in digital forensics lies in the level of data extraction and the methods used.
Logical acquisition refers to the process of extracting data from a device at a file system level. It involves accessing the device's operating system and file structures to retrieve files, folders, and metadata. Logical acquisition is non-invasive and does not alter the original data on the device. It is typically used when the device is accessible and functioning properly, such as during live investigations or when dealing with unlocked devices.
On the other hand, physical acquisition involves creating a bit-by-bit copy or image of the entire storage media, including both allocated and unallocated space. This method captures all data, including deleted files, hidden partitions, and system files. Physical acquisition is more invasive and requires specialized tools and techniques to access the device's memory directly. It is commonly used when dealing with locked or damaged devices, or when a more comprehensive analysis is required.
In summary, logical acquisition focuses on extracting data at a file system level, while physical acquisition involves creating a complete copy of the storage media, including all data and system structures.