Role of Encryption in Database Security

Database Security is the primary concern for today’s IT professionals. In recent years, the limitations of many conventional database protection methods such as firewalls and application security have been exposed, and it is now broadly recognized that these approaches to database security are not adequate to guard businesses and data in today’s sophisticated IT environment. Database encryption is often considered as the solution to alleviate the risk of security breaches.

Why is encryption indicated as the best protection against database security breaches?

Corporate networks are becoming more and more open to the outside parties such as suppliers, clients, and business partners. Network security is not enough to protect data, so there is a need to adopt a deeper approach by adding multiple layered securities around the data. As the system is considered to be inherently insecure hence encrypting the data is the best option.
In database security, encryption protects the actual data within the database and guards the backups. It implies that the data remains secured even at the time of any data breach. Modern techniques of database encryption, such as the Transparent Data Encryption (TDE) do not require any changes to database applications. Thus, it is easy for organizations to deploy database encryption.

Challenges associated with database encryption

Why is encryption still not used by many companies to protect their databases?

Many organizations think that encryption and its key management will slow down their business processes and will block access to data. Encryption key management seems to be one of the biggest challenges in database encryption. If an encryption key gets lost, then the business has to bear the heavy cost of data recovery. Because of the issues like- backing up and revoking or terminating keys to avoid unauthorized access to data, many companies choose to use automatic and centralized key management systems instead of manual processes.

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