Difference between pages "Eraser" and "SQLite database format"

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{{Infobox_Software |
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  name = eraser |
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  maintainer = [[Heidi Computers]] |
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  os = {{Windows}} |
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  genre = {{Anti-forensics tools}} |
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  license = {{GPL}} |
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  website = [http://heidi.ie/eraser/ heidi.ie/eraser] |
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}}
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== About ==
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SQLite databases are used by many programs including several forensics tools, e.g. [[Autopsy]] 3.
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SQLite 3 is current and older SQLite packages cannot use sqlite3 databases so use sqlite3 tools.
  
Eraser is a Windows tool that allows you to securely remove files from your computers hard drive and securely wipe free space so as to remove remnants of previously deleted files.
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== SQLite3 ==
  
== Methodology ==
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SQLite version 3 uses a page-based storage where the pages are used for various types of data e.g. there are:
Eraser overwrites the filename for each deleted file with zeros up to the maximum filename length.
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* lock-byte pages
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* freelist pages
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** freelist trunk pages
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** freelist leaf pages
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* B-tree pages
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** table B-tree interior pages
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** table B-tree leaf pages
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** index B-tree interior pages
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** index B-tree leaf pages
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* payload overflow pages
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* pointer map pages
  
== External Links ==  
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=== Write-Ahead Log (WAL) ===
* [http://www.heidi.ie/eraser/ Official website]
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The default method by which SQLite implements atomic commit and rollback is a rollback journal. In version 3.7.0 a "Write-Ahead Log" option was added.
  
[[Category:Anti-forensics tools]]
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== Temporary sqlite files ==
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Seen in e.g.
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<pre>
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/Users/%USERNAME%/AppData/Local/Temp/etilqs_%RANDOM%
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</pre>
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Where "etilqs" is "sqlite" in reverse
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== Use Cases ==
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=== Web Browser Data ===
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[[Mozilla Firefox]] and [[Google Chrome]] both use SQLite version 3 databases for user data such as history, downloaded files.
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=== Mobile OS ===
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[[Google Android]] and [[Apple iOS]] use SQLite3 databases for many system applications. Phone data including calls, messages, and credentials are all stored in SQLite3.
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== External Links ==
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* [http://sqlite.org/fileformat2.html The SQLite Database File Format], by the [[SQLite|SQLite project]]
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* [http://sqlite.org/wal.html Write-Ahead Logging], by the [[SQLite|SQLite project]]
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* [http://forensicsfromthesausagefactory.blogspot.com/2011/04/carving-sqlite-databases-from.html Carving SQLite databases from unallocated clusters], by Richard Drinkwater, April 27, 2011
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* [http://linuxsleuthing.blogspot.ch/2013/09/recovering-data-from-deleted-sqlite.html Recovering Data from Deleted SQLite Records: Redux], by [[John Lehr]], September 13, 2013
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== Tools ==
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* [[SQLite]]
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* [[SQLite Forensic Reporter]]
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[[Category:File Formats]]

Revision as of 11:15, 26 June 2014

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Please help to improve this article by expanding it.
Further information might be found on the discussion page.

SQLite databases are used by many programs including several forensics tools, e.g. Autopsy 3. SQLite 3 is current and older SQLite packages cannot use sqlite3 databases so use sqlite3 tools.

SQLite3

SQLite version 3 uses a page-based storage where the pages are used for various types of data e.g. there are:

  • lock-byte pages
  • freelist pages
    • freelist trunk pages
    • freelist leaf pages
  • B-tree pages
    • table B-tree interior pages
    • table B-tree leaf pages
    • index B-tree interior pages
    • index B-tree leaf pages
  • payload overflow pages
  • pointer map pages

Write-Ahead Log (WAL)

The default method by which SQLite implements atomic commit and rollback is a rollback journal. In version 3.7.0 a "Write-Ahead Log" option was added.

Temporary sqlite files

Seen in e.g.

/Users/%USERNAME%/AppData/Local/Temp/etilqs_%RANDOM%

Where "etilqs" is "sqlite" in reverse

Use Cases

Web Browser Data

Mozilla Firefox and Google Chrome both use SQLite version 3 databases for user data such as history, downloaded files.

Mobile OS

Google Android and Apple iOS use SQLite3 databases for many system applications. Phone data including calls, messages, and credentials are all stored in SQLite3.

External Links

Tools