Multicloud security: challenges, threats, best practices

Angelika Agapow
Angelika Agapow
Content Marketing Specialist
May 22
16 min

What is multi-cloud security?

Multi-cloud security is a sophisticated cybersecurity approach that enables companies to protect their virtualized assets, data, and applications which are distributed across multiple cloud environments. The complexity of multi-cloud environments requires IT teams to use several distinct tools, processes, and systems to ensure security throughout their entire cloud infrastructure.


Is multi-cloud security good for your business?

While multi-cloud environments provide numerous benefits such as increased agility, operational efficiency, and flexibility, they also introduce various security challenges. As organizations leverage multiple cloud providers, they encounter significant difficulties in implementing uniform security policies that can cover the entire virtual environment. Furthermore, the use of a diverse array of cloud tools and services increases the likelihood of security vulnerabilities and misconfigurations, which can lead to data breaches and other cyber threats.

Multi-cloud security aims to address these challenges by establishing a consistent and comprehensive security framework across all the cloud environments utilized by an enterprise. This involves deploying various security measures such as network segmentation, access controls, data encryption, and multi-factor authentication, among others. Additionally, IT teams have to ensure compliance with various regulatory requirements, including GDPR, HIPAA, and PCI DSS, among others.

Effective multi-cloud security requires a comprehensive and well-coordinated approach that integrates various security measures and technologies. Enterprises must continually assess and update their security posture to address emerging security threats and vulnerabilities in their multi-cloud environments. By doing so, they can enjoy the benefits of multi-cloud adoption while ensuring the safety and integrity of their digital assets.


Multi-cloud security challenges

Multicloud security is a complex and challenging discipline since different providers (Azure, AWS, Google, Oracle) offer different measures, that require careful planning and execution.


1. Consistency is difficult to achieve: The goal of achieving a consistent security policy across all cloud services is essential, it is not an easily achievable feat. With thousands of cloud service providers, each with varying approaches to security, organizations must be prepared to put in significant effort to customize their security solutions to cater to each service.

2. Staff are scarce: One of the biggest hurdles that organizations face with multicloud security is the limited availability of qualified staff with the necessary skills to manage such systems. Alternatively, organizations may have to look to invest significant funds into training their internal staff to effectively manage multicloud security protocols.

3. It’s easy to make mistakes: Despite the implementation of multicloud security solutions, it is still possible for mistakes to occur. For instance, human error may cause unintentional security breaches, including the disabling of encryption protocols across all clouds. Organizations must, therefore, be vigilant and ensure that their personnel is adequately trained and well-versed in managing multicloud security systems.

4. Multicloud security may not solve data governance issues: In situations where organizations have to comply with various privacy regulations, which restrict data storage in specific locations, a multicloud security solution may not be sufficient to ensure regulatory compliance. This creates a potential risk of violating compliance rules and attracting penalties.


It is important for organizations to consider all these factors when implementing multicloud security solutions. They must work closely with their cloud service providers to guarantee that their security policies align with the best industry practices and ensure the highest levels of performance and data protection.


Multicloud security threats

In the current business landscape, cloud computing has emerged as a popular solution for many organizations, as it allows them to enjoy greater flexibility and scalability in their operations. However, it is crucial to note that cloud service providers are only responsible for securing the cloud infrastructure itself, and security challenges may arise if organizations do not maintain security within the cloud. These challenges are further amplified when working with multiple cloud providers.


1. Lack of visibility: This one occurs primarily due to the fact that cloud security is often handled by third-party providers themselves, each of whom has a unique approach to cloud security. As a result, the security process becomes even more complex for the in-house security team, reducing their visibility over various aspects of the cloud environment. Furthermore, detecting security incidents across all cloud environments can be incredibly challenging without proper monitoring and visibility tools, thereby leading to delayed response and increased damage.

2. Appropriate privileged credentials: Operating across multiple cloud environments would require most employees to access more than one cloud, and the transition to remote or hybrid work arrangements have made it even more challenging to secure data from devices and locations that may be difficult to monitor.

3. Complexity brings inconsistency: It is another significant issue that arises in multi-cloud environments with respect to security policies and procedures. Since each cloud service provider has its own set of tools and approaches to cloud security, there is a lack of a consistent set of tools, processes, and approaches across the entire cloud environment. Hence, it becomes essential to enforce strong authentication and authorization policies consistently and review access permissions regularly in all cloud environments.

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4. Data governance: It is another threat that companies may face when working across multiple cloud environments. Though multi-cloud environments may enable employees to access and exchange data across different clouds, it may expose data to risk if adequate data governance processes and procedures are lacking. Managing security policies, access control, and monitoring across multiple cloud environments can be challenging, especially without unified governance in place.

5. Misconfigurations or configuration drifts: Both may arise when changes are made in one cloud environment but not replicated across others. This loophole could lead to potential security vulnerabilities and pose a significant risk to companies. It is paramount to maintain consistency across all environments to ensure a comprehensive and foolproof security mechanism.

6. Shadow IT: The rising trend of Shadow IT is equally concerning for security specialists. Companies often witness that business units leverage cloud services without IT approval, leading to inconsistencies in security measures amount the various departments. It is crucial to maintain a consistent security posture across all environments; otherwise, it poses a considerable risk to the entire organization. Besides that, shadow IT reduces visibility into the company’s cloud usage and makes monitoring more difficult, thereby potentially increasing the chances of security breaches. To prevent this, IT must take necessary measures to ensure employees adhere to cloud usage policies to prevent any mishaps.


Multicloud security best practices

Organizations have significant room for improvement in optimizing their multi-cloud security strategies, according to Gartner.

The research found that an overwhelming 99% of cloud security issues through 2025 will be the result of customer oversights.

Therefore, enterprises must prioritize and enhance security measures in their multi-cloud environments. Taking proactive steps now to strengthen security protocols can help prevent future security threats and save enterprises time and resources. With the growing prevalence of multi-cloud adoption, organizations cannot afford to be complacent when it comes to securing their cloud infrastructure.


#1 Automate end-to-end security processes

Ensuring multi-cloud security has become even more crucial in this age of advanced cloud technologies and ever-evolving malicious threats. Thankfully, automating the entire security process has emerged as one of the most effective methods to achieve robust multi-cloud security. By automating repetitive, manual security tasks, your security team can focus on mitigating real threats and faster incident response, reducing the chances of costly human errors. Leveraging automation facilitates quicker threat detection and response, leading to a much-improved security posture.

With the rise of cloud deployments, hackers are constantly evolving their tactics, breaching security gaps, and attacking host systems. In this context, automating ongoing monitoring processes is crucial to identifying and rapidly patching any new security gaps. Organizations can now use automation tools to carry out continuous security assessments and obtain real-time threat intelligence to protect their cloud infrastructure better. By automating security protocols, companies can achieve a more robust, effective, and efficient multi-cloud security posture.

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#2 Maintain contact with cloud service providers

The diversity in toolsets, policies, and processes used by different cloud service providers to maintain data security can result in an inconsistent cybersecurity approach from an enterprise standpoint. This inconsistency can potentially lead to expensive oversights. Consequently, sufficient comprehension of the cybersecurity policies of a cloud service provider is vital to ensure their alignment with one’s requirements and needs. To bridge possible gaps, it is necessary to understand the security obligations of both the enterprise and cloud service provider in the shared responsibility model. This understanding facilitates proactive mitigation efforts from the outset.


#3 Consider security before building your infrastructure

Maintaining security in a constantly evolving cloud environment presents a significant challenge for security teams. The need for developers to quickly deploy cloud-based software often results in cybersecurity oversight during the development process. This can lead to undetected security vulnerabilities being built into the cloud architecture, resulting in expensive remediation efforts at a later stage. Best practice dictates that cybersecurity must be considered at the design stage of cloud applications to identify potential attack vectors and to implement built-in security procedures. To prevent security breaches, organizations should conduct a comprehensive security testing process at every stage of development to identify and address any issues that may lead to security gaps.


#4 Maintain visibility by investing in the right security tools

It’s a difficult job to keep track of all security tools and data scattered in different cloud systems. But there are cloud security solutions that can alleviate such issues. They offer a centralized location for managing diverse security tools and data, significantly increasing visibility and control over all security information and analysis. Leveraging cybersecurity tools that allow you to customize security policies based on the nuances of each cloud provider is also vital. Such customization enables you to get the most from your security posture across different private and public clouds.


Building multicloud security strategy

Developing a comprehensive multi-cloud security strategy entails a rigorous assessment of the potential threats and risks posed by the complex multi-cloud environment. It requires meticulous identification and prioritization of the most critical assets and data that require protection, followed by the appropriate implementation of security controls to safeguard them.

A multi-cloud environment can expose an organization to various security challenges, such as data breaches, cyber-attacks, compliance violations, and other risks stemming from the cloud infrastructure’s complexity. Therefore, it’s important to consider several key elements while developing a multi-cloud security strategy to mitigate these risks.


1. Identify critical assets and data: In order to safeguard your organization, it is vital to identify the crucial assets and information that require protection first. These assets may include sensitive customer data, financial records, valuable intellectual property, and any proprietary information that, if exposed, could inflict substantial harm to your organization. By prioritizing the protection of such assets, you can bolster your organization’s security posture and safeguard its reputation and financial well-being.

2. Assess risks and threats: After identifying the critical assets, it is crucial to assess the potential risks and threats that these assets face. This entails carefully analyzing the threat landscape, including both insider and external threats, as well as supply chain attacks. During this process, it is vital to identify any vulnerabilities that exist within your infrastructure and applications. By doing so, you can take proactive measures to mitigate these risks and fortify your security posture. Additionally, accessing risks in detail can help you develop effective response plans and incident management procedures, minimizing the damage in the event of a security breach. Ultimately, a comprehensive approach to risk assessment is essential for any organization looking to safeguard its assets from potential threats.

3. Choose a security framework: When selecting a security framework, it is important to ensure that it is in line with your organization’s objectives and regulatory compliance needs. Several frameworks are commonly used, including NIST Cybersecurity Framework, PCI DSS, and ISO 27001. Each of these frameworks provides guidance on how to improve your organization’s security posture, and you must choose the one that best suits your company’s unique needs. Therefore, it is essential to conduct thorough research and analysis before selecting a framework to ensure optimal security practices are put in place.

4. Implement security controls: Implement effective security controls that align with the chosen framework to mitigate the identified risks and threats. These security controls ensure the confidentiality, integrity, and availability of sensitive data and systems. Some of the commonly used security controls include identity and access management, which ensures that only authorized individuals can access sensitive information, network segmentation, which isolates critical systems and segments them from less secure areas, encryption, which protects data from unauthorized access during transmission and storage, data loss prevention, which prevents data leakages and controls unauthorized access to data, and security monitoring, which continuously monitors the IT environment and alerts the security team about potential threats in real-time. These security controls provide businesses with a comprehensive approach to cybersecurity, safeguarding them against emerging cyber threats and attacks that could lead to data breaches, financial loss, and reputational damage.

5. Monitor and test: This involves conducting frequent vulnerability assessments, penetration testing, and security audits. By doing so, potential security breaches can be identified and addressed promptly. Vulnerability assessments help in identifying existing vulnerabilities in systems and applications, while penetration testing determines the susceptibility of the entire system to security threats. Security audits, on the other hand, provide an essential review of the security measures implemented, ensuring they meet industry standards and regulations. In summary, monitoring and testing a multi-cloud security strategy is integral in keeping its integrity and ensuring the protection of critical data.

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6. Plan for incident response: The key is to craft an incident response plan which should contain a comprehensive set of steps to be taken in the event of a security breach. Moreover, one must keep in mind the significance of identifying the appropriate response team, assigning relevant roles and responsibilities, and establishing communication channels. The plan should extensively cover all these aspects. Furthermore, it should provide a detailed course of action that should be taken to ensure effective management of the situation. The plan should be well-structured so that it can be quickly and easily implemented when the need arises. Additionally, it should be flexible enough to cater to unique circumstances that may arise. Ultimately, a properly crafted incident response plan can make the difference between a quick recovery and an unmitigated disaster.

7. Stay up-to-date with security trends: It is good for security professionals to remain well-informed about current security trends and emerging threats within the industry. Participation in the security community, attendance at conferences, and engagement with industry reports are all important components of this effort. By staying up-to-date with the latest developments, security experts can adjust their strategies accordingly and efficiently mitigate any potential risks or vulnerabilities. In this way, they can effectively safeguard the networks, systems, and data of their organizations against a variety of security threats.


The benefits of multi-cloud security

In today’s fast-paced business world, organizations are increasingly seeking agility, flexibility, and innovation as key drivers of success. As such, more and more businesses are opting for cloud deployment, which enables them to optimize their business processes, support virtual and hybrid work environments, and ultimately create greater value for their customers. While the decision to deploy a single- or multi-cloud environment may vary depending on organizational needs, it is clear that cloud migration is becoming a top priority for most businesses.


#1 More cloud options: Opting for a multi-cloud environment provides several benefits, such as increased cloud options. Designing your cloud infrastructure to span across multiple cloud providers allows you to choose multiple cloud providers that best align with your business needs. This facilitates a more refined allocation of resources and enables you to take advantage of specific strengths offered by different cloud providers.

#2 Facilitate scalability: Outsourcing workflows and core business functions to the cloud enhances scalability and allows resources to be directed towards growth and innovation instead of building a physical infrastructure in-house. Additionally, with a multi-cloud arrangement, you can avoid being restricted by lock-in policies, which allows you to switch cloud providers whenever your current provider no longer meets your business requirements.

#3 Switch vendors at will: One of the most significant benefits of a multi-cloud strategy is avoiding lock-in policies that restrict switching between vendors, which often proves to be a considerable obstacle to growth. A multi-cloud environment offers freedom, enabling organizations to divert their resources to other areas of the business, rather than wasting their time and money adapting to the restrictive policies of a single cloud provider. With a multi-cloud environment, businesses can effortlessly switch vendors, optimizing their processes without undue challenges to their internal operations.

#4 Stay resilient in the face of disruption: In the face of disruption, multi-cloud deployment provides added resiliency. By distributing data and applications throughout several clouds, any outages, whether planned or unplanned, will not impact the entire organization. This limits the overall disruption to business operations, allowing your business to remain productive during times of adverse circumstances.

Wrapping Things Up: Multi-cloud security

Multi-cloud security refers to the strategies, policies, and measures implemented to protect data, applications, and infrastructure within a multi-cloud environment, which involves using multiple cloud service providers (CSPs) for different workloads. Here’s a summary of key aspects involved in multi-cloud security:

Data protection
Ensuring sensitive data is protected across various cloud platforms is crucial. Implement encryption at rest and in transit, and use secure storage and backup solutions across all CSPs.

Identity and access management
Establish robust identity and access management (IAM) policies that work across multiple cloud providers. Utilize multi-factor authentication (MFA), single sign-on (SSO), and role-based access control (RBAC) to minimize unauthorized access risks.

Network security
Secure communication between different cloud platforms and your on-premises environment using virtual private networks (VPNs), firewalls, and intrusion detection/prevention systems (IDS/IPS).

Compliance and governance
Maintain compliance with industry-specific regulations and standards, such as GDPR, HIPAA, or PCI DSS, by implementing appropriate security controls and conducting regular audits across all CSPs.

Security monitoring and incident response
Continuously monitor the multi-cloud environment for potential security threats or vulnerabilities using security information and event management (SIEM) systems. Develop a well-defined incident response plan to quickly address and mitigate any security breaches.

Shared responsibility model
Understand the shared responsibility model for each cloud service provider you use. While CSPs are responsible for securing the underlying infrastructure, it’s up to your organization to ensure proper configuration and management of cloud resources.

Centralized management and visibility
Gain visibility into your multi-cloud environment by using centralized management tools and dashboards that provide insights into security events, resource usage, and potential vulnerabilities across all cloud platforms.

Secure DevOps practices
Integrate security into the entire development lifecycle by adopting secure DevOps practices, such as infrastructure as code (IaC), automated security testing, and continuous monitoring across multiple CSPs.

Vendor risk assessment
Assess the security posture of each cloud service provider you work with, ensuring they meet your organization’s security requirements and adhere to industry best practices.

Employee training and awareness
Educate employees on best practices for multi-cloud security, ensuring they understand their roles and responsibilities in maintaining a secure environment across different cloud platforms.

By addressing these aspects, organizations can build a robust security posture for their multi-cloud environment, protecting sensitive data and applications from potential threats while maintaining compliance with industry standards and regulations.

Angelika Agapow
Angelika Agapow
Content Marketing Specialist
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