What are cloud security risks?
Cloud security risks are the ways data, applications and infrastructure hosted on cloud platforms can be exposed, altered or disrupted – most often through misconfiguration and weak identity controls rather than flaws in the cloud provider itself. Under the shared responsibility model, providers such as AWS, Azure and Google Cloud secure the underlying infrastructure, while customers are responsible for how they configure services, manage access and protect their data.
Key takeaways
- Most cloud incidents start with misconfiguration or stolen credentials.
- Identity is the new perimeter: enforce MFA, least privilege and short-lived keys.
- Encrypt data, log everything important and alert on unusual activity.
- Automate security checks in infrastructure-as-code and CI/CD pipelines.
What are the 10 most common cloud security risks?
| # | Risk | Mitigation |
|---|---|---|
| 1 | Misconfigured storage and services (e.g. public buckets) | Policy-as-code, configuration scanning, block public access by default |
| 2 | Weak identity and access management | MFA, least privilege, role-based access, regular access reviews |
| 3 | Leaked keys and secrets | Secrets manager, key rotation, scanning code repositories |
| 4 | Insecure APIs | Authentication, rate limiting, input validation, API gateways |
| 5 | Data breaches and leakage | Encryption at rest and in transit, data classification, DLP |
| 6 | Lack of visibility | Central logging, monitoring and alerting across accounts |
| 7 | Unpatched workloads and images | Automated patching, hardened base images, container scanning |
| 8 | Account hijacking | MFA, anomaly detection, protected root accounts |
| 9 | Insider threats | Separation of duties, logging, just-in-time privileged access |
| 10 | Ransomware and data loss | Immutable backups, cross-region copies, tested recovery |
Key figures
- Misconfiguration and inadequate change control ranked as the #1 cloud computing threat, followed by identity and access management, in a poll of 500+ experts. (Cloud Security Alliance, 2024)
- 68% of organisations reported a rise in access-based attacks, and 55% say cloud is harder to secure than on-premises. (Thales Cloud Security Study, 2025)
- 40% of data breaches involved data stored across multiple environments – public cloud, private cloud and on-premises. (IBM Cost of a Data Breach, 2024)
"In the cloud, the biggest risk is rarely the provider – it is a setting someone forgot to change."
What is the shared responsibility model?
The cloud provider secures the physical data centres, hardware and core services. You secure your identities, configurations, applications, network rules and data. The more managed the service, the more the provider handles – but access and data are always yours to protect.
How do you build a secure cloud setup?
- Define all infrastructure as code and review it like application code.
- Separate environments and accounts for production, staging and development.
- Centralise identity with single sign-on and enforce MFA.
- Encrypt everything and manage keys centrally.
- Run automated security scans in the CI/CD pipeline.
- Log centrally, alert on anomalies and rehearse incident response.
How do containers and Kubernetes change the picture?
Containers add image, runtime and orchestration layers to secure: scan images, run as non-root, restrict network policies and manage secrets outside images. We applied these practices when building Aristiun’s cybersecurity platform on Docker, Kubernetes and Microsoft Azure.
Frequently asked questions
What is the biggest cloud security risk?
Misconfiguration – such as publicly exposed storage or overly broad access permissions – causes a large share of cloud incidents.
Is the cloud less secure than on-premise?
Not inherently. Major providers offer strong security, but customers must configure it correctly and manage access carefully.
How can we detect cloud misconfigurations?
Use cloud security posture management tools, policy-as-code checks in deployment pipelines and regular configuration audits.
Who is responsible for data security in the cloud?
The customer. Providers secure the infrastructure; you remain responsible for your data, access controls and configurations.
How Assystant can help
Assystant designs and runs secure cloud platforms on AWS, Azure and GCP, with Kubernetes, CI/CD and identity management built in. See cloud & DevOps enablement or talk to us.