3 Steps for Auditing a Cloud Service Provider

Auditing the compliance of cloud-based IT system vendors is essential to ensure efficient and secure operational processes.

Customer expectations should include the ability to view audit reports conducted by independent auditors.

A Cloud service provider (CSP) should ensure that customers have access to these audit reports, which outline customer-specific data and applications usage.

Auditors of cloud services tend to primarily focus on security and privacy concerns, consisting of three main aspects.

These topics include: understanding the internal control environment, gaining access to the corporate audit trail, and examining the management and control facilities.

1. Understand the internal control environment of a CSP

Customers of a cloud service provider require confirmation that the security controls of the cloud environment meet their requirements.

This assurance must be provided by auditors who work independently.

There are several key controls that auditors use to audit cloud services:

• Separation of customer data and applications, in the context of shared environments
• Protection of customer assets from unsanctioned access by the provider’s staff
• Safety of customer online property from both intentional and unintentional access by customer employees or associates

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2. Access to the corporate audit trail

While auditing the cloud service environment is crucial, access to the audit trail is equally important.  Auditors must ensure that all required information is recorded sufficiently and securely by the CSP.

Customers should also have access to logs and events to validate the security controls set by the provider.

To increase the transparency of security controls around the customer’s applications and data, there should be a regular exchange of communication between the CSP and client-organization.

Automated access to regularly updated logs and reports, time-sensitive notifications for critical security alerts, and incident management documentation should be passed on to customers.

 3. Security of Cloud service facilities

Along with offering cloud services as their core product, cloud-service providers also facilitate the management of cloud service usage through providing customers with several features.

Some of these features include:

• Payment procedures
• Subscription settings
• Usage rate
• Usage breakdown

The security measures of these features are much more regulated as the potential risk is much higher. Along with auditing the security of the core cloud service product, auditors must also audit the security of these additional services.

A complete audit of a CSP’s environment is necessary for security and privacy concerns.

Audits should be performed by certified independent auditors, and must be based on established controls for auditing a cloud services environment.

Customers should also be given access to all relevant audit information, along with secure access to facilities that manage the cloud services they receive.

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