Top 10 Cloud Security Standards You Should Know

What Are Cloud Security Standards?

Cloud security standards are structured frameworks that outline how organizations protect and manage data in cloud computing environments. They establish the security controls, processes, and data governance measures necessary to prevent unauthorized access, reduce security risks, and meet regulatory requirements.

These standards combine technical, procedural, and organizational measures, from access control and encryption to incident response and risk management. Their purpose is to ensure that data stored and processed in the cloud remains secure, private, and compliant with relevant regulations.

Cloud security standards apply across every layer of the cloud infrastructure including IaaS, PaaS, and SaaS. Whether an organization relies on public, private, or hybrid cloud services, adherence to these frameworks supports consistency and accountability.

1. ISO/IEC 27017

ISO/IEC 27017 is an extension of ISO 27001 designed specifically for cloud service providers and customers. It focuses on defining shared responsibilities between both parties to safeguard information stored or processed in the cloud.

The standard provides detailed controls for managing cloud assets, protecting virtual machines, and securing multi-tenant environments. It enhances collaboration by clarifying security roles — an essential step for preventing misconfigurations and data exposure. Implementing ISO 27017 fosters transparency and improves trust across global cloud operations, aligning organizations with international best practices.

2. ISO/IEC 27018

ISO/IEC 27018 focuses on protecting personally identifiable information (PII) within public cloud environments. It complements data protection laws such as the General Data Protection Regulation (GDPR) by emphasizing privacy and accountability in data handling.

It outlines controls for consent management, data retention, and deletion, ensuring that cloud providers process personal data responsibly. For organizations hosting customer data in the cloud, ISO 27018 builds confidence by reinforcing privacy commitments and preventing unauthorized data use.

3. NIST SP 500-291

Developed by the U.S. National Institute of Standards and Technology, NIST SP 500-291 provides guidelines for securing cloud computing environments. It defines the reference architecture for cloud systems and introduces key principles for security assessment and interoperability.

The framework supports consistent risk management across federal and enterprise deployments. It helps organizations identify vulnerabilities, apply uniform security practices, and ensure cloud infrastructure aligns with federal standards and industry requirements.

4. CSA CCM

The Cloud Security Alliance Cloud Controls Matrix (CSA CCM) is one of the most widely adopted frameworks for cloud-specific control mapping. It aligns directly with multiple international standards, providing a unified model for evaluating and improving cloud security.

The Cloud Controls Matrix helps organizations assess the maturity of their security domains, ensuring alignment between internal controls and external compliance requirements. It’s particularly valuable for benchmarking cloud products, streamlining audits, and enhancing cybersecurity governance across distributed systems.

5. SOC 2

SOC 2, developed by the American Institute of CPAs, evaluates an organization’s adherence to the Trust Services Criteria: security, availability, processing integrity, confidentiality, and privacy.

This standard is essential for cloud service providers that manage or store sensitive information on behalf of clients. SOC 2 audits provide assurance that adequate safeguards are in place, reinforcing client trust and enabling contractual compliance. It also helps organizations demonstrate accountability during vendor assessments or procurement processes.

6. ISO/IEC 22301

ISO/IEC 22301 addresses business continuity management (BCM), which is an essential aspect of cloud resilience. It guides organizations in planning, maintaining, and improving their response to incidents that disrupt cloud services.

The standard enhances operational resilience by ensuring organizations can recover critical systems and data quickly after a failure or breach. Implementing ISO 22301 minimizes downtime, protects brand reputation, and supports continuous delivery of cloud applications to customers and partners.

7. PCI DSS

PCI DSS is the global security standard for organizations that handle credit card transactions or payment data within cloud infrastructure. It establishes strict technical and operational requirements for securing cardholder information.

By following PCI DSS, organizations can mitigate fraud, prevent breaches, and maintain compliance with financial regulations. For cloud deployments, the framework mandates segmentation, encryption, and secure authentication. It is indispensable for e-commerce platforms and payment processors operating in shared or hybrid environments.

8. FedRAMP

FedRAMP (Federal Risk and Authorization Management Program) provides a standardized approach to security assessment, authorization, and continuous monitoring for cloud solutions used by federal agencies.

This framework ensures that all cloud services adopted by the U.S. government meet stringent regulatory requirements for confidentiality, integrity, and availability. For vendors, achieving FedRAMP authorization streamlines engagement with government clients and enhances credibility across the public sector.

9. CIS Controls

The Center for Internet Security (CIS) Controls define a prioritized set of best practices for securing IT and cloud environments. The controls address security threats such as malware, data leaks, and account compromise.

CIS Controls provide actionable, technical guidance for defending against the most common attack vectors. They are structured to help organizations strengthen access management, patch vulnerabilities, and monitor anomalies, improving defense posture and reducing exposure to cybersecurity incidents.

10. HIPAA Security Rule

The HIPAA Security Rule establishes safeguards for electronic protected health information (ePHI) managed in cloud computing environments. It mandates administrative, physical, and technical protections to prevent misuse or disclosure.

Healthcare organizations using cloud technology must follow HIPAA to protect patient data and ensure compliance with federal privacy laws. Implementing these measures helps reduce security risks, maintain patient trust, and avoid costly penalties from regulatory authorities.

How Mimecast Supports Cloud Security Standards

Mimecast simplifies compliance with global frameworks by integrating governance, visibility, and data security into one unified platform. Through advanced threat detection, automated policy enforcement, and centralized monitoring, Mimecast helps organizations align with international standards, from ISO to CSA CCM.

Mimecast helps organizations:

• Simplify Oversight: Centralized dashboards track regulatory compliance across multi-cloud environments.
• Reduce Risk Exposure: AI-powered analysis identifies vulnerabilities and blocks threats before they escalate.
• Automate Enforcement: Continuous monitoring ensures that configurations and user behavior align with policy.
• Streamline Audits: Built-in reports and audit trails support compliance validation with minimal effort.

Mimecast’s approach transforms compliance from a reactive task into a continuous governance model. By maintaining consistent enforcement across platforms, organizations strengthen resilience, demonstrate accountability, and meet the highest standards of cloud security.

Explore Mimecast’s cloud security and compliance solutions to see how cloud.