Beginner's Tutorial

System Encryption

 Supported Systems

 Hidden Operating System

 Rescue Disk

Plausible Deniability

 Hidden Volume

  Protection of Hidden Vol.

  Security Requirements

 Hidden Operating System



Hardware Acceleration

Encryption Algorithms





Hash Algorithms




Technical Details


 Encryption Scheme

 Modes of Operation

 Header Key Derivation

 Random Number Gen.


 Volume Format Spec.

 Standards Compliance

 Source Code

TrueCrypt Volume

 Creating New Volumes

 Favorite Volumes

 System Favorite Volumes

Main Program Window

 Program Menu

 Mounting Volumes

Supported Systems

Portable Mode


Tokens & Smart Cards

Language Packs

Hot Keys

Security Model

Security Requirements

 Data Leaks

  Paging File

  Hibernation File

  Memory Dump Files

 Unencrypted Data in RAM

 Physical Security


 Multi-User Environment

 Authenticity and Integrity

 New Passwords & Keyfiles

 Password/Keyfile Change

 Trim Operation


 Reallocated Sectors


 Journaling File Systems

 Volume Clones

 Additional Requirements

Command Line Usage

Backing Up Securely


 Use Without Admin Rights

 Sharing over Network

 Background Task

 Removable Medium Vol.

 TrueCrypt System Files

 Removing Encryption

 Uninstalling TrueCrypt

 Digital Signatures



Issues and Limitations


Future Development


Version History



Security Requirements and Precautions >  Malware Search


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The term 'malware' refers collectively to all types of malicious software, such as computer viruses, Trojan horses, spyware, or generally any piece of software (including TrueCrypt or an operating system component) that has been altered, prepared, or can be controlled, by an attacker. Some kinds of malware are designed e.g. to log keystrokes, including typed passwords (such captured passwords are then either sent to the attacker over the Internet or saved to an unencrypted local drive from which the attacker might be able to read it later, when he or she gains physical access to the computer). If you use TrueCrypt on a computer infected with any kind of malware, TrueCrypt may become unable to secure data on the computer.* Therefore, you must not use TrueCrypt on such a computer.

It is important to note that TrueCrypt is encryption software, not anti-malware software. It is your responsibility to prevent malware from running on the computer. If you do not, TrueCrypt may become unable to secure data on the computer.

There are many rules that you should follow to help prevent malware from running on your computer. Among the most important rules are the following: Keep your operating system, Internet browser, and other critical software, up-to-date. In Windows XP or later, turn on DEP for all programs.** Do not open suspicious email attachments, especially executable files, even if they appear to have been sent by your relatives or friends (their computers may be infected with malware sending malicious emails from their computers/accounts without their knowledge). Do not follow suspicious links contained in emails or on websites (even if the email/website appears to be harmless or trustworthy). Do not visit any suspicious websites. Do not download or install any suspicious software. Consider using good, trustworthy, anti-malware software.

* In this section (Malware), the phrase "data on the computer" means data on internal and external storage devices/media (including removable devices and network drives) connected to the computer.
** DEP stands for Data Execution Prevention. For more information about DEP, please visit, and

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