Today, protecting our personal information has become a real headache. With the massive rollout of digitalization, we've gone from using simple passwords to entrusting our identity to the biometrics and storage systems encrypted, ensuring that no one but ourselves can see our most private files.
It's not just about putting a digital lock on, but about understanding that the data that defines who we are—from a fingerprint to an iris scan—is indelible and permanent assetsIf someone steals our password, we can change it in a second, but if our biometrics are compromised, the problem is permanent, which makes secure vaults essential tools.
How biometric authentication works
Biometrics isn't new; we've been using fingerprints to seal pacts for centuries, but technology has taken it to another level. Basically, it involves analyzing unique biological traits to validate that someone is who they claim to be, mainly divided into two large blocks.
On one hand we have physiological biometrics, which focuses on the body: fingerprints, facial recognitionIris scanning, hand geometry, or even ear structure are examples. On the other hand, there is behavioral biometrics, which analyzes how we act, such as... gait, the typing rhythm or the handwritten signature.
When we pass our finger over the sensor, the system doesn't save a "photo" of the fingerprint, but rather converts it into a unique numeric stringThis code is what is compared with the stored record to give us access, making the process smooth and, above all, very fast.
Biometric vaults and template protection
To prevent hackers from feasting on our data, biometric templates are used. These are mathematical representations derived from the raw data. The goal is that, even if someone manages to access the database, they will not be able to reconstruct the original physical trait.
To protect these templates, there are several layers of security. AES or RSA encryption This is the first barrier, rendering the information unreadable. However, encryption is not perfect, so a second layer is used. hash and salt, which create a one-way digital footprint that is impossible to reverse.
The most advanced option is biometric vault storage, where the key to decrypt the template is generated from the user's own data. In other words, the The key is not stored anywhere.Instead, it is created at the time of scanning, ensuring that only the actual owner can open access, similar to Disk encryption and protection of sensitive data on Android.
There is also cancelable biometrics. This technique intentionally distorts the data before saving it. If a template were to be leaked, it could be used to... "cancel" and generate a new one without the user having to change their face or fingerprints, which is obviously impossible.
How to manage Secure Folders on Samsung devices
Many Samsung users utilize the Secure Folder feature to protect their most sensitive files. To prevent data loss, it is vital to perform the necessary actions. backups on Samsung Cloud linked to the user's personal account.
To back up your data, simply go to the Secure Folder settings, then to the section on safety and restorationAdd your Samsung account and select the items you want to save. This entire process is supported by backup and backup strategiesIt ensures that, if we change devices, our privacy remains intact.
If you need to recover the information, the process is reversed: access the restoration settings and select the target device to download the backed-up files. It's a simple way to maintain full control over sensitive documentation.
Real risks, vulnerabilities and threats
Despite sounding infallible, biometrics has its weaknesses. Cybercriminals use presentation attackssuch as high-resolution photos or silicone molds to fool the sensors. To combat this, the liveness check), which verify that the person is present and awake.
There are also repetitive attacks, where fingerprints are lifted from tactile surfaces using adhesive tape and then digitized. Furthermore, physical sabotage of the sensors It can leave an organization blind, forcing it to always have an alternative access method and prioritize the Importance of cybersecurity and patches of the System.
We cannot forget about technical failures. If the comparison algorithm is mediocre or the sensor is of low quality, these can occur. false positives or negativesEven natural changes, such as beard growth or a burn on the hand, can cause the system to fail to recognize us.
The legal framework and data privacy
Given the sensitivity of this information, laws such as GDPR in the European Union They classify biometric data as special categories. This obliges companies to obtain a explicit consent already implement extreme security measures to avoid multimillion-dollar fines.
In the United States, the BIPA law is particularly strict, allowing for very costly individual lawsuits if a company collects biometric data without permission. This has led many organizations to adopt the data minimizationcollecting only what is strictly necessary.
For a system to be legal and ethical, it must avoid the implicit biasesIt has been found that some facial recognition algorithms fail more with dark-skinned people or trans people, requiring developers to use much more inclusive databases.
Security is ensured by the combination of tools. For users, the ideal is to use the multi-factor authenticationby combining the fingerprint with an SMS code or a token. For companies, it is essential to conduct regular audits and have cybersecurity teams that monitor threats in real time.