From the course: CompTIA CySA+ (CS0-002) Cert Prep: 6 Incident Response

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File carving

File carving

From the course: CompTIA CySA+ (CS0-002) Cert Prep: 6 Incident Response

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File carving

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- [Instructor] As a security professional, you probably already know that deleting a file using operating system commands doesn't truly remove that file's data from your disk. It simply deletes the reference to the file, leaving the data in unallocated space. File carving techniques allow you to comb through the unallocated space of a disk image and recover files and other interesting data that might be present. File carving is a very useful forensic technique because it can pick up information that was stored on disk temporarily during a security incident. Let's take a look at a tool called Bulk Extractor. Bulk Extractor is a file-carving utility that is widely used among the security community. It can read disk images and capture interesting information for later analysis. I'm going to run Bulk Extractor with some arguments. First, I'm going to use the -o option to select an output directory. I'll call my output directory…

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