When working with sensitive information, Encrypt your data properly It ceases to be optional and becomes an obligation. Work documents, medical reports, client data, or simply your personal files can end up in anyone's hands if you lose a laptop, have a USB drive stolen, or someone snoops on a shared server.
In this context, VeraCrypt has earned its fame: allows you to create secure volumes They mount like regular hard drives, but everything inside is encrypted with robust algorithms. It's free, available for Windows, Linux, and macOS, and, when used correctly, is one of the best ways to carry your data on a USB drive without fear of it being read.
Why you need to encrypt your data with secure volumes
Beyond theory, encryption has a very clear objective: to ensure your files are unreadable without the correct keyIn other words, even if someone copies your disk, steals your USB drive, or takes your laptop, they won't be able to see anything useful without your password or key files.
From a professional point of view, the matter is even more serious: You are legally responsible for the data that you handle. If you store confidential information on a shared server, a company laptop, or a cloud-synced folder, you have to assume that anyone with elevated permissions (administrators, technicians, an attacker who breaks into the system) could access everything if it's not encrypted.
Furthermore, many cloud services store files in plain text or with encryption that you don't control, so You have no real guarantees of confidentialityHuman error, a data breach, or a successful attack on the provider can leave your documents exposed without you being able to do much about it.
That's why it's as simple as this: if you're going to store sensitive data on a medium that can be lost, stolen, or shared (USB drives, external hard drives, network folders, cloud storage…), Encrypting the content should always be step number one..
VeraCrypt fits perfectly into this scenario because it offers real-time, transparent, and cross-platform encryption, allowing you to work as if it were a normal recordbut without sacrificing good cryptographic security.
What is VeraCrypt and where does it come from?
VeraCrypt is a disk encryption application that allows you to create secure volumes in files, partitions, or entire disksIt was born as a fork of the well-known TrueCrypt 7.1a, which was abruptly abandoned in 2014 after a decade of being a benchmark in real-time encryption.
The VeraCrypt team took the TrueCrypt code, reviewed it, improved its security mechanisms and development continued. In 2016 it underwent an independent security audit which, with some nuances, validated that the software was sound for use, especially after the fixes were implemented.
The tool is distributed as freeware: some of the code inherited from TrueCrypt remains under the TrueCrypt 3.0 licensewhich is not fully recognized as free software by the FSF or the OSI. The new code is licensed under Apache 2.0, but when combined with non-free sections, the whole is not strictly considered free software, although it is free of charge and audited.
In practice, this means that many Linux distributions don't include it in their official repositories due to licensing policies, although you can always Download the binaries or the code from the official website and install it manually on Windows, macOS, Linux, FreeBSD or even Raspberry Pi OS.
On a technical level, VeraCrypt supports encryption algorithms such as Advanced AESSerpent and TwofishIn addition to cascading combinations between them, it uses strong hash functions (such as SHA-512) to derive the keys. It also leverages the encryption extensions of many modern processors to accelerate performance.
Key features of VeraCrypt in everyday use
What makes VeraCrypt so useful is not just the cryptographic theory, but the way it allows you to work with your encrypted files. without changing your habits more than expected. Among its most interesting features are these:
- Volumes in container filesYou create a single encrypted file that, when mounted with VeraCrypt and the correct password, appears as another drive on your system.
- Encryption of partitions or entire drivesYou can protect an entire hard drive, an SSD, an external drive, or a complete USB flash drive.
- System partition encryption (Windows): allows the entire operating system to require pre-boot authentication to start.
- Encryption on the fly: all data is encrypted and decrypted in real time in RAM, never written in plain text to disk.
- Cross-platform compatibilityThe volumes can be opened on Windows, Linux, and macOS, always using VeraCrypt and the correct key.
Thanks to this approach, the files you read from a VeraCrypt volume are decrypted only in memory while you use themAnd anything you copy or save to it is automatically encrypted before reaching the disk. Even with the volume mounted, the actual content on the device remains encrypted.
Another advanced feature is the hidden volumesBasically, it's an encrypted volume inside another encrypted volume. This technique offers some plausible deniability in extreme situations, but it's not essential for most users and can complicate management, so it should only be used if you truly understand its implications.
Types of secure volumes with VeraCrypt
One of VeraCrypt's strengths is that it lets you choose between several types of volumes according to your needs, all based on the same concept: create an encrypted area that is only seen as readable when mounted with the right key.
In general terms, you will find three main usage options: encrypted containers such as encrypted files, partitions or secondary drives (ideal for USB drives and external hard drives) and encrypted system drives.
Encrypted container (volume file)
This method involves creating a file that, to the system, is a simple file without a known format, but which VeraCrypt uses as encrypted virtual diskWhen you mount it, the system sees it as a new drive to which you can copy, move, or edit files normally.
The advantage of this approach is that it is tremendously flexible: the container file can be move, copy, upload to the cloud, or save to any driveFurthermore, if you host it on services like Google Drive, OneDrive, or Dropbox, all the data within it remains end-to-end encrypted by you, not the provider.
In systems like Linux, this volume will appear mounted in a specific folder (for example, in /half), and in Windows it will appear as a new drive letter in Explorer. For you, it's like working with "another disk"; for anyone trying to open the container file without VeraCrypt, it's just an unreadable block of data.
Encryption of partition or secondary drive
The second common option is to encrypt a full partition or an external drivesuch as a 16GB USB flash drive or an external hard drive. In this case, the VeraCrypt wizard takes care of converting the entire drive into an encrypted volume.
The result is that, when you connect that USB drive to a Windows system without mounting the volume, the system thinks the drive is mounted. unformatted or damaged and it will suggest formatting it (which you obviously shouldn't do). In Linux, it often doesn't even appear as an automatically mountable drive.
To access the content, you will need to open VeraCrypt and choose the option to Select deviceSpecify the encrypted drive and mount it with your password. From then on, it will function like a normal drive until you unmount it again from the program.
This option is especially recommended for data in transitUSB drives that you carry around, external hard drives with backups, etc. At first glance, nothing is readable, and without the key, the contents are completely inaccessible.
System unit encryption
On Windows machines, VeraCrypt can also encrypt the partition from which the system boots, so that before Windows itself loads, it must be encrypted. Enter a password at startupIf someone tries to read the disk with a Linux Live USB or by removing it from the laptop and connecting it to another computer, they will only see encrypted data.
This model makes sense for laptops containing particularly sensitive information or in environments where the risk of loss or theft is high. The performance impact is manageable on most modern hardware, and the protection against physical access is far superior to simply having a password-protected user account in the operating system.
How to create a secure volume with VeraCrypt step by step
The general process for creating a secure volume is usually very similar, whether you choose an archive container or a full partition. The program includes a fairly clear guided assistant which guides you through the options. Even so, it's important to fully understand what you're doing at each step.
First of all, download VeraCrypt from the official website, install the version appropriate for your system, and, if you wish, change the language to spanish From the Settings > Language menu. If you are going to encrypt a USB drive or external hard drive, back up any important data, because the process will erase all content.
1. Choose volume type
From the main window, click on "Create Volume" to launch the wizard and select if you want an encrypted file container or encrypt a secondary partition/drive. For general use, a container file is usually sufficient and more flexible.
In the next step it will ask you if the volume will be common or hiddenNormally, you would use the common VeraCrypt volume; hidden volumes are reserved for very specific scenarios where you need to deny the existence of some of the data.
2. Select location and size
If you are creating a container file, you will need to specify a path on your system and a descriptive filename (Do not select an existing file; the wizard will create it from scratch.) If you want to encrypt a drive or partition, you will need to choose the correct disk or USB drive from the device list.
Next, we need to define the encrypted volume sizeIn a container file, you decide how many gigabytes it will occupy; in a full partition, you typically use all the available space. Think carefully about the size: if you're going to sync it with the cloud, a smaller volume (for example, 500 MB or 1 GB) might be better for critical documents.
3. Encryption and Hash Algorithms
VeraCrypt offers several algorithm combinations. For most users, leaving the default option of AES as encryption And a strong hash like SHA-512 is more than enough and offers an excellent balance between security and performance.
From the window itself you can execute a performance benchmark to see how your computer performs with the different algorithms. If you have a modern processor, you'll notice that AES is especially fast thanks to its hardware encryption instructions.
4. Define a strong password and PIM and key file options
The strength of the volume will depend largely on the password (passphrase) Choose the one you prefer. It's recommended to use a long phrase, at least 16 characters, mixing uppercase and lowercase letters, numbers, and symbols. The more complex and lengthy the phrase, the harder it will be to crack with brute-force attacks.
VeraCrypt also allows you to combine several protection factors:
- Password: the secret phrase or word you enter when assembling the volume.
- Key fileOne or more files (images, MP3s, random documents, etc.) that are used as part of the key. Without these files, the password alone is useless.
- PIM (Personal Iterations Multiplier): a number that adjusts the number of iterations in the key derivation process, further increasing resistance to brute-force attacks.
By combining these three elements, you can greatly increase security. However, it's important to keep in mind that if You lose the key file or the PIM And if you don't have them written down anywhere, it doesn't matter if you remember the password: the volume will be unrecoverable.
A good practice is to generate random key files using VeraCrypt's own tool: take advantage of your mouse movements for a few seconds To create random content, save that file somewhere well thought out (or even spread across multiple locations) and use it as part of your key files. Keep in mind that only the first megabyte of each file is used for key derivation, so the truly random portion must be at the beginning.
5. Choose file system and format
The next step is to choose the file system of the internal volume. If the volume will be used as an external drive across different operating systems, exFAT is usually a safe bet. For drives that will remain in a Windows PC and handle large files, NTFS is also a good option. For many small files and without demanding requirements, FAT may be sufficient.
Depending on the volume size and intended use, the wizard will ask if you will be storing files larger than 4 GB. Select the corresponding option to ensure it chooses the correct compatible format.
Just before you press the "Format" button, you'll see an empty progress bar and an area where you're invited to move the mouse randomlyDo it without fear for a good while, until the bar turns completely green: this feeds the random number generator that will be used for the encryption keys, and the more random movement there is, the stronger the result will be.
When the formatting starts, take it easy: the process may take This may take several minutes or even longer, depending on the type of drive, the volume size, and the connection speed (USB 2.0, USB 3.0, etc.). When finished, the wizard will notify you, and you can close the window.
Mount, use, and dismount your VeraCrypt volumes
Once the volume is created, daily use is simple: from the VeraCrypt main window, you select a free drive letter (on Windows) or a mount point (on Linux/macOS), click on Select File o Select device, you select the encrypted volume and click on "Mount".
A window will open asking for your password and, if applicable, the key files and PIM. After entering the correct information, the system will mount the volume and, from that point on, It will appear as just another album on your computer. You'll be able to copy files, create folders, work with documents, etc.
Everything you write within the volume will be automatically encrypted, and when you finish working, it's essential disassemble the volume From VeraCrypt (using the "Unmount" or "Unmount All" button) before disconnecting the USB drive or external hard drive. This prevents data corruption and ensures that nothing is accidentally left mounted.
The great advantage of this approach is that the same volume you mount on Windows can also be mounted on Linux or macOS, provided you have VeraCrypt installed for that system. This allows you to move sensitive information between devices and platforms without relying on proprietary solutions like BitLocker.
It's even possible to use VeraCrypt from a Linux LiveUSBYou boot a live system (for example Xubuntu), install the VeraCrypt .deb package, mount the encrypted volume, and perform delicate operations in a temporary environment that is more controlled and isolated from the main system.
Example of a secure workflow with multiple volumes
A fairly practical way to organize your backups and mobility with VeraCrypt is to work with three well-defined encrypted volumeseach with a specific role. It's a kind of simple but effective "framework" for keeping your files synchronized and protected:
- Volume 1: a local encrypted container where you usually work.
- Volume 2: another local encrypted container for saving versions and changes.
- Volume 3: a fully encrypted USB or external hard drive for moving between computers.
The idea is that you mount volume 1 to do your normal work on the main computer. When you finish the session, you also mount volume 2 and volume 3, and use a sync tool such as rsync in Linux or FreeFileSync in Windows to copy changes from volume 1 to volume 3, also saving intermediate versions in volume 2.
This way, you carry an up-to-date copy of your files on your encrypted USB drive to work on other computers; when you return, you can synchronize the changes from the USB drive back to your local container. Always working within mounted encrypted volumesNever leave files in plain text on unprotected drives.
This routine, although it may seem a bit tedious at first, ends up becoming quite automatic and allows you to have backups, mobility and control without compromising the confidentiality of your data.
Password management, key files, and practical security
However strong the encryption algorithm is, the ultimate security of your data volumes will depend largely on how you manage your keysA short or predictable password can ruin all the protection that VeraCrypt provides.
A highly recommended strategy is to use passwords so long and complex that, frankly, you can't memorize themIn those cases, the sensible thing to do is to use a password manager like KeePass, where you save the volume key and only have to remember the master password for that manager.
You also need to be aware that all of this falls apart if there is a problem on the computer where you enter the password or connect the key files. keyloggers, malware, or spywareHowever complex the key may be, if someone captures it at the moment it is written, the attack is no longer cryptographic, but one of practical engineering.
As for key files, they are a great option for strengthening security, but they require discipline: you must store them in places where they won't get lost and, at the same time, it's not obvious that they are encryption keys. You can camouflage them among other normal files or have them distributed across several locations (drives, cloud storage, etc.), always keeping in mind that if you lose them allThe volume will be impossible to open.
Keep in mind that VeraCrypt allows the use of multiple key files, in any order, and that only the first megabyte of each file is counted. Take advantage of the built-in random file generation tool to create files specifically as keysand avoid reusing the same key files for very different volumes if it is not necessary.
Throughout the entire process, the combination of a strong password, sensible use of key files, and, optionally, a well-chosen PIM will give you a level of protection that, for everyday and professional use, is more than enough against realistic attacksprovided that the equipment you work on is reasonably clean and up-to-date.
With all of the above, VeraCrypt becomes a very powerful tool for encrypting disks, partitions, and containers without making your life too complicated: you can work with your data almost as usual, synchronize it, carry it on a USB drive, or host volumes in the cloud, but with the peace of mind that, if someone gets hold of the physical device or the container file, they will only see a block of undecipherable data as long as you continue to control your passwords and key files.
