Malware & Ransomware Protection

What is a Data In-Use Encryption?

rectangle Written by: Anne Gotay rectangle 2 2 min read

What is a Data In-Use Encryption?

Data In-Use Encryption refers to the protection of data while it’s actively being processed or accessed by applications. Unlike data at rest (stored data) or data in transit (data being transferred), data in-use is data that’s currently being utilized by computer systems or analyzed by individuals. This encryption ensures that even if an attacker gains access to a system’s memory, they won’t be able to decipher the data without the appropriate decryption key. This renders data that has been exfiltrated useless to attackers, thereby also removing the threat of extortion attempts.


The Process Involves:

  1. Initialization: Before data processing begins, an encryption key is generated.
  2. Encryption: As data is loaded into the system’s memory for processing, it’s encrypted using advanced algorithms.
  3. Processing: The system processes the encrypted data without ever decrypting it. This is where the term “queryable encryption” comes into play, allowing operations on encrypted data.
  4. Decryption: Once processing is complete and data needs to be read or transferred, it’s decrypted using the encryption key.


Business Benefits of Data In-Use Encryption

Enhanced Security Posture:
Protecting data in-use significantly reduces the risk of data breaches, ensuring that even if attackers infiltrate a system, they can’t access the actual data.

Regulatory Compliance:
Many industries have regulations that mandate the protection of sensitive data. Encrypting data in-use helps businesses meet these requirements.

Trust Building:
Customers and partners are more likely to trust businesses that prioritize data security, leading to stronger relationships and potential business growth.


Technical Benefits of Data In-Use Encryption

Reduced Attack Surface:
By encrypting data in-use, businesses minimize the avenues through which attackers can exploit vulnerabilities.

Queryable Encryption:
This allows for operations on encrypted data without the need for decryption, ensuring continuous protection.

Efficient Resource Utilization:
Modern encryption techniques are optimized for performance, ensuring that system resources aren’t overly taxed.

Integration with Other Security Measures:
This type encryption complements other security measures, like firewalls and intrusion detection systems, creating a multi-layered defense strategy.


Why is Data In-Use Encryption Important?

Data breaches are increasingly common and can have devastating consequences for businesses. While many organizations prioritize protecting data at rest and in transit, sensitive data remains vulnerable. This oversight can be exploited by cybercriminals to access sensitive information.

Furthermore, with the rise of cloud computing and multi-tenant environments, multiple processes from different users often run on the same physical hardware. Without in-use encryption, one process might inadvertently access another’s data.

By implementing data in-use or queryable encryption, businesses can ensure comprehensive protection, safeguarding their reputation and avoiding potential financial losses.


Use Cases

  • Financial Transactions: In banking and finance, real-time transactions require immediate processing. In-use encryption ensures that details like account numbers and transaction amounts remain confidential during processing.
  • Healthcare Data Processing: Medical records contain sensitive patient information. When healthcare systems analyze this data for trends or diagnostics, this encryption ensures patient confidentiality.
  • Cloud-Based Applications: Many businesses rely on cloud platforms for their operations. Data in-use encryption ensures that data processed in the cloud remains secure, even in multi-tenant environments.
  • Real-Time Analytics: For businesses that analyze data in real-time for insights, data in-use encryption ensures that the data remains secure during the analysis.
  • Data Detection and Response: In scenarios where systems actively monitor for security threats, data in-use encryption ensures that the data being analyzed for threats remains confidential.


Data in-use encryption, often associated with terms like “queryable encryption,” plays a pivotal role in modern data security strategies. By understanding its workings, benefits, and importance, businesses can better safeguard their valuable data assets.


Subscribe to our Blog

Take a look at a truly encrypted future, with no data left unsecure.

Request a Live Demo.

Schedule a live one-on-one
demo of Sotero.

Book Demo