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Townsend Security Data Privacy Blog

Securing SQL Server in the Cloud

Posted by Liz Townsend on Dec 19, 2014 10:21:00 AM

Organizations running SQL Server Enterprise edition gain the added benefit of SQL Server transparent data encryption (TDE) and extensible key management (EKM). The encryption capabilities of Enterprise edition enable users to easily encrypt data at the column level of a database, and EKM allows users to store encryption keys using a third-party encryption key management solution. These streamlined capabilities of SQL Server Enterprise Edition have made SQL Server one of the easiest databases to encrypt, and therefore it’s popularity hasn’t waned.SQL Server Resource Kit on Encryption & Key Management

One of the biggest issues facing SQL Server users today is maintaining security as users move their SQL databases to the cloud. While Microsoft Azure remains a popular cloud service provider (CSP) for SQL users, Amazon Web Services (AWS) and VMware are also common amongst organizations moving to the cloud, especially those migrating a multi-platform environment. Each of these top-tier CSPs offer security solutions to help you protect your cloud environment; however, when considering security in the cloud there are two important things to remember: The security offered by your CSP won’t provide you with a complete security solution, and the security solutions you bring to protect your data in the cloud can fail if not implemented correctly.

Don’t rely on the cloud for complete security!

Your CSP should provide your business with some security, but their solutions are likely limited. Most CSPs will offer firewall protection, for example. Top-tier CSPs have also undergone some certifications such as Payment Card Industry (PCI) and FedRAMP compliance. It is important to remember, however, that relying on firewalls alone is not enough to prevent intruders, and cloud certifications never mean that your company will automatically meet these compliance regulations as well. A comprehensive data security plan is required for any business operating in the cloud, and this typically requires using third-party security solutions to ensure your business meets compliance and is adequately protecting data.

Remember these two things when protecting data in the cloud:

  • The security solutions offered by your cloud vendor are rarely enough to prevent a data breach.
  • Just because your cloud service provider is compliant, doesn’t mean you are.

Storing data in SQL Server in the cloud presents new security challenges. Hackers or malicious users can gain access to sensitive data easily through common hacks. Easy hacking of SQL Server is a result from:

  • Incorrect configuration of cloud provider’s firewall
  • Attacks through weaknesses that could have been addressed by updating and patching SQL Server
  • Missing or weak passwords
  • social engineering and account hacking
  • Lax administrative access

When it comes to securing SQL Server in the cloud, you should also always consult your legal and auditing team (or consultants) before assuming that your data is safe and you are compliant with any industry security regulations. On a general level, it’s important to include these security measures in your holistic security plan:

  • Intrusion prevention
  • System logging and monitoring
  • Encryption & key management
  • SSH in place of passwords
  • Limited access to sensitive data
  • Separation of duties and split knowledge when accessing encryption keys and sensitive data.

It’s important to remember that your business continuity relies on your own security plan. Regardless of the environment, when your organization experience a data breach, ultimately the responsibility is yours. Your customers, as well as your employees, rely on you to protect their data, and if you fail to do so, the consequences may include loss of customer loyalty and a severely damaged brand. The ultimate way to prevent access to sensitive data is using encryption and encryption key management.

To learn more about how Microsoft SQL Server Enterprise Edition can easily be secured in the cloud, download:

Resource Kit: Encrypting Data on SQL Server

 

Topics: Encryption, Encryption Key Management, Resource Kit, SQL Server, Cloud Security

Definitive Guide to VMware Encryption & Key Management
 

 

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