What Is Encryption at Rest and How Do We Protect Stored Data?

What Is Encryption at Rest?

When the data is not actively moving in the network, it is termed “at rest”. The direct meaning of the term is that data is stored on a hard drive, in a database, or in cloud storage. Most security methods handle the data when it is in transit, but encryption at rest applies a cryptographic algorithm to data and scrambles it into ciphertext. This data can then be accessed only by entering a decryption key, which restores it to its original form.

Why Does Encryption at Rest Matter for Stored Data?

The main work of firewalls and access control is to guard the perimeter, but they can not restrict someone if someone is already in the storage by bypassing the hardware. Unauthorized access can cause major harm and expose all the data to attackers.

This gap is secured by encryption at rest.

The scrambled data restricts the attacker and remains useless unless and until a decryption key is used. These techniques, hence, help in placing a very important last line of defense for safeguarding the data.

How Does Encryption at Rest Actually Work?

The core of encryption works on cryptographic algorithms; the most common is AES-256. In this process, an encryption key is generated, a unique key for characters to lock and unlock the readable data. This is a key storage and key management system in an entirely different location so that even if a cyber attack happens, the data could be safe. An authorized person can verify, through permission, access the decryption key and see the unscrambled data.

How Does Dev Technosys Protect Stored Data?

Dev Technosys uses encryption at rest as a standard requirement, not as an optional security layer. Our developers apply AES-256, which is industry standard in safeguarding data in databases, file storage, and backups. We also use a dedicated key management system to store the key securely and protect it from attackers.

We also implement role-based permissions to distinguish between authorized users based on the access level, with a feature for requesting permission for access.

This secure approach, aside from using a firewall and access control, ensures the safety of data even if there is a breach in the firewall system.

Commonly Asked Questions

1. Is Encryption at Rest Enough on Its Own to Secure Data?

No, it is not enough on its own to secure the data. Encryption at rest acts as a final line of defense to protect the stored data if there are any breaches in the system. Encryption in transit, security monitoring, and regular review of security systems should work alongside it to get the best results.

2. What Encryption Standard Does Dev Technosys Use for Stored Data?

Dev Technosys uses the industry-standard encryption algorithm, AES-256. This protects sensitive data stored in databases, file systems, and backups through encryption keys.

3. Does Encryption at Rest Affect Application Performance?

Encryption and decryption of the scrambled data are handled at the hardware or software level, without using significant system resources. It mostly runs in the background without slowing down the application.

4. Is Encryption at Rest Required for Compliance (HIPAA, GDPR, SOC 2)?

Compliance does explicitly mandate encryption at rest by name. Regardless, most compliance frameworks such as HIPAA, GDP, and SOC 2 say that it is required to protect sensitive data through the best technical safeguards.