News and Insights – December 2021

Cloud Security Misconfigurations – And How to Prevent Them

As 2021 wraps up, many organisations are re-evaluating their digital infrastructure, especially their cloud environments. But while cloud adoption has surged, security often lags behind. One of the most pervasive and preventable threats remains misconfiguration.

From misconfigured S3 buckets to open ports in Azure VMs, the risks posed by incorrect cloud setups are real and frequent. Gartner once predicted that through 2025, 99% of cloud security failures would be the customer’s fault—largely due to misconfiguration.

What Causes Cloud Misconfigurations?

There are several reasons why cloud environments become vulnerable:

• Lack of visibility: Cloud sprawl across providers and regions makes it harder to monitor all configurations.
• Complex permissions: Misuse of Identity and Access Management (IAM) can grant more access than intended.
• Human error: Manual setups are prone to mistakes.
• Default settings: Many services launch with insecure default settings unless explicitly hardened.

Recent High-Profile Examples

Even large organisations aren't immune. In 2021, several data breaches were traced back to cloud misconfigurations. For instance, a global hotel chain leaked millions of customer records due to an improperly secured cloud database. Similarly, a misconfigured AWS S3 bucket exposed internal files of a fintech startup.

In most cases, these incidents weren’t caused by zero-day exploits or sophisticated hacking—they were the result of oversight.

How to Reduce the Risk

Organisations can take several steps to mitigate misconfiguration risks:

• Use configuration management tools: Tools like Terraform, CloudFormation, or Pulumi promote consistency and transparency.
• Enable logging and auditing: AWS CloudTrail or Azure Activity Log can alert teams to changes.
• Apply the principle of least privilege: Avoid broad permissions. Roles should be specific and temporary if possible.
• Conduct regular reviews: Use cloud security posture management (CSPM) tools to automatically scan for issues.

Build a Secure Culture Around Cloud

Security is not just about tools—it’s about mindset. Cloud teams must work closely with security and compliance teams to align priorities. DevSecOps is no longer optional; it’s essential. Baking security into development and deployment pipelines ensures issues are caught early.

Checklist to Get You Started

To help you evaluate your environment, we’ve prepared a cloud misconfiguration checklist with the most common pitfalls to look for and how to correct them.

Here is the checklist: Cloud Security Misconfiguration Self-Assessment