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The Dark Data Blog

The Dark Data Blog

Welcome to our Dark Data Blog.  I, Rob Zirnstein, have brought back some entries that I wrote in the past, and I plan to write new posts periodically.  My intent is not to fill this blog with forced weekly posts, but

Dark Data Rob June 11, 2022September 6, 2022 Uncategorized No Comments Read more

DCO vs DFA vs HPA vs UAD

DCO vs DFA vs HPA vs UAD

In January, I wrote about Slack Space on a hard drive/thumb drive/mobile device, and today I am writing about other areas where data is hiding on a hard drive.  I intentionally left Device Configuration Overlay (DCO), Disk Firmware Area (DFA)

Dark Data Rob May 30, 2023May 30, 2023 Computer Forensics, Digital Forensics, Industry Terms No Comments Read more

Byte Value Distribution (BVD)

Byte Value Distribution (BVD)

Before you can do anything with an unstructured file, you first need to identify its file type.  Our products start with the following steps: Calculate hashes (MD5, SHA-1, etc.) for the entire file, and match them to known good and/or

Dark Data Rob April 29, 2023May 30, 2023 Computer Forensics, Digital Forensics, File Expander, File Formats, File Investigator, Industry Terms No Comments Read more

World Backup Day

World Backup Day

Our customer base is primarily in the Data Recovery, Data Security, Digital Forensics, Electronic Discovery and Spy Agency industries.  When threatened by Hackers, Ransomware and Data Loss, what one technology is the ultimate solution to prevent the need for Data

Dark Data Rob March 31, 2023March 31, 2023 Data Backup, Data Recovery, Industry Terms, Information Governance No Comments Read more

Alternate Data Streams

Alternate Data Streams

In 2008, I wrote a blog entry, Simple Techniques That Fool Forensic Tools, that included an introduction to Alternate Data Streams.  Now, I’d like to go into more detail, so that you can better understand the use and danger of

Dark Data Rob February 28, 2023May 30, 2023 Computer Forensics, Digital Forensics, eDiscovery, File Investigator, Industry Terms No Comments Read more

Slack Space

Slack Space

With increasing data storage sizes comes waste.  In the Digital Forensics (AKA Computer Forensics) industry, this waste is called slack.  Early in the home computer, IBM PC & Macintosh world, the trend moved from floppy disks to hard drives.  In

Dark Data Rob January 31, 2023May 30, 2023 Computer Forensics, Digital Forensics, File Expander, Industry Terms No Comments Read more

Massachusetts’ Dark App is Spyware

Massachusetts’ Dark App is Spyware

In June of 2021, people in Massachusetts noticed a new application (app) installed on their Android cell phones, that they didn’t initiate.  What an unwelcome surprise!  Where did that come from?  Is someone messing with my phone?  Even people driving

Dark Data Rob December 31, 2022December 31, 2022 Dark App, Data Security, Spyware No Comments Read more

Facebook Dark Data

Facebook Dark Data

What data is Meta (Facebook) hiding about you?  For many, Facebook is vital for sharing with friends and relatives.  Businesses gain many customers through their advertising on this platform.  Meta is a for profit company, and you can’t make a

Dark Data Rob September 30, 2022September 30, 2022 Data Security No Comments Read more

Unstructured Data

Unstructured Data

Unstructured Data sounds like files that store disorganized data or simple text, but I see it as more of a classification term than the description of a file’s lack of internal data structures.  Some examples, provided in an article by

Dark Data Rob August 31, 2022August 31, 2022 Data Classification, Document Management, eDiscovery, File Formats, Industry Terms No Comments Read more

Dark Data Dangers

Dark Data Dangers

If Dark Data is hidden, how can it be dangerous?  How much of a threat can it possibly be?  Dark Data is everywhere.  It’s hidden in the firmware of the smallest devices, like survelance cameras, printers, TV streaming devices, your

Dark Data Rob July 30, 2022May 30, 2023 Computer Forensics, Data Backup, Data Security, Digital Forensics No Comments Read more

What Is Dark Data?

What Is Dark Data?

What does Dark Data mean?  We use this term on our website, as if it is obvious.  In the most basic terms, Dark Data is information that is difficult to find.  So, in effect it is sitting in the dark.

Dark Data Rob June 12, 2022May 30, 2023 Computer Forensics, Digital Forensics, Document Management, eDiscovery, Industry Terms, Information Governance No Comments Read more
  • « Previous

Recent Posts

  • DCO vs DFA vs HPA vs UAD

    DCO vs DFA vs HPA vs UAD

    May 30, 2023
    In January, I wrote about Slack Space on a hard drive/thumb drive/mobile device, and today …Read more
  • Byte Value Distribution (BVD)

    Byte Value Distribution (BVD)

    April 29, 2023
    Before you can do anything with an unstructured file, you first need to identify its …Read more
  • World Backup Day

    World Backup Day

    March 31, 2023
    Our customer base is primarily in the Data Recovery, Data Security, Digital Forensics, Electronic Discovery …Read more

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Recent Posts

  • DCO vs DFA vs HPA vs UAD

    DCO vs DFA vs HPA vs UAD

    May 30, 2023
  • Byte Value Distribution (BVD)

    Byte Value Distribution (BVD)

    April 29, 2023
  • World Backup Day

    World Backup Day

    March 31, 2023

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