Computer Forensics Tools Essay

1779 words - 8 pages

Computer Forensics Tools

Strayer University

E-Support Undelete Plus is powerful software that can quickly scan a computer or storage medium for deleted files and restore them on command. It works with computers, flash drives, cameras, and other forms of data storage. Deleting a file from your computer, flash disk, camera, or the like does not mean it is lost forever. Software doesn’t destroy files when it deletes, it simply marks the space the file was using as being available for re-use. If nothing has needed that space since the deletion, the data is still there and the file can be recovered. Simply scan the device, select the files you want to recover, and click a button to ...view middle of the document...

The options available in the filter box include providing the application with the entire or part of the name of the file you want to recover, as well as the modification date interval and the size range. Once you set the filter, the scan will take into consideration only these settings and look for your file. Undelete PLUS is very easy to use and the multilingual support ensures its use by an increased number of users (Softpedia, 2013).

DiskDigger can recover deleted files from most types of media that your computer can read: hard disks, USB flash drives, memory cards, CDs, DVDs, and floppy disks. DiskDigger has two modes of operation which you can select every time you scan a disk. These modes are called "dig deep" and "dig deeper." The "dig deep" mode makes DiskDigger "undelete" files from the file system on your disk. Under most file systems, when you delete a file, it doesn't actually get wiped clean from the disk. Instead, the file system will simply mark the file as deleted, and no longer show you the file when you browse the contents of the disk. DiskDigger scans the file system for such deleted files, exposes them to you, and allows you to bring them back as ordinary files again. However, this kind of process has several limitations. Firstly, DiskDigger has to be "aware" of what file system is present on the disk. Therefore, it only supports certain types of file systems:

• FAT — used on floppy disks (FAT12), most USB flash drives and memory cards under 4 gigabytes, and older hard disks (FAT16).

• FAT32 — used on slightly older hard disks and most USB flash drives and memory cards with 4 gigabytes or greater.

• NTFS — used on most modern hard disks.

• exFAT — used on some modern hard disks and high-capacity memory cards and USB drives.

Fortunately, the above list of file systems covers the vast majority of the world's users, so this limitation is trivial compared to the next one. The "dig deeper" mode causes DiskDigger to become a powerful data carver, and carve out whatever files it can find on the disk, independent of the file system.  Data carving refers to physically scanning every single sector on the disk, and looking for traces of known file types. The main advantage is that it's independent of the file system that's on the disk, so the disk can be formatted as FAT, NTFS, HFS, ext2, or anything else; it doesn't matter. DiskDigger scans "underneath" the file system, which gives it an additional advantage of being able to scan any free space on the disk outside of the file system, which the "dig deep" mode cannot do. DiskDigger is free to download and scan however if you would like to save any recovered files there is a $14.99 fee for a license purchase (Defiant Technologies, 2010).

Mobile SIM data backup utility easily restores unreadable text messages of SIM card memory. Data Doctor mobile SIM SMS recovery software regains lost SIM card information such as SPN (service provider name), ICC-ID...

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