Cloud security

As businesses increasingly migrate to cloud environments to leverage flexibility, scalability, and cost-efficiency, the need for robust cloud security measures has never been more critical. This shift presents unique challenges and vulnerabilities that require a tailored approach to security.
  • 94% of enterprises use cloud services, highlighting the ubiquity of cloud computing. (Source: RightScale 2020 State of the Cloud Report)
  • Cloud vulnerabilities have increased by 50% over the past year, emphasizing the growing security challenges. (Source: Skybox Security 2020 Vulnerability and Threat Trends Report)

Attackers have two avenues of attack to compromise cloud resources; accessing systems inside the enterprise network perimeter, or by compromising credentials from an administrator account that has remote administrative capabilities or has CSP administrative access.

When visibility is available in the cloud infrastructure, it is much easier to detect attacker behaviors in compromised systems and services that are clearly operating outside of expected specifications.

Differences between network security and cloud security

Cloud environments change fundamental assumptions in how to perform threat detection and response.

The highly dynamic inventory of cloud workloads means systems come and go in seconds. When system configuration errors are introduced during a build, they can be exacerbated and amplified when automation replicates the errors across many workloads. Shared responsibility with the cloud service provider (CSP) creates potential threat detection gaps in the attack lifecycle.

Everything in the cloud is moving to an API data access method, and traditional approaches to monitoring traffic flow no longer apply.

In addition to challenges in threat detection and response, the pace of innovation in the cloud leaves businesses consistently behind the curve. Increasing business competition means organizations focus more on shipping features first and outsourcing non-core capabilities business models – often at the expense of information security.

An explosion of cloud services means the concept of a perimeter is gone and using perimeter controls becomes futile. A growth of new infrastructure and deployment tooling results in new environments with new security models and attack surfaces.

network vs cloud security
Cyberattack Lifecycle in the network vs in the Cloud

The complexity of cloud security tools

The tools offered by CSPs are complex and are still new to many enterprise tenants, which leads to accidental misconfigurations. And finally, the existing shortage in security expertise becomes amplified with all the newly released features and services.

Most critically, the introduction of multiple access and management capabilities creates variability that adds significant risk to cloud deployments. It is difficult to manage, track, and audit administrative actions when those users can access cloud resources from inside or outside the corporate environment.

Without a well-thought-out privilege account management strategy that includes well-segregated roles for gaining administrative access from only approved locations, organizations are susceptible to misuse of administrative credentials and privileges.

Traditionally, accessing a server required authentication to the organization’s perimeter and monitoring could be implemented inside the private network to track administrative access. The cloud management systems are accessed from the public internet via a web interface or API. Without appropriate protection, the enterprise tenant could immediately expose the crown jewels.

Attack lifecycle in cloud security

Attackers have two avenues of attack to compromise cloud resources.

The two ways attackers use to compromise cloud security
Attackers have two avenues of attack to compromise cloud resources.

The first is through traditional means, which involves accessing systems inside the enterprise network perimeter, followed by reconnaissance and privilege escalation to an administrative account that has access to cloud resources.

The second involves bypassing all the above by simply compromising credentials from an administrator account that has remote administrative capabilities or has CSP administrative access.

This variability in administrative access models means the attack surface changes with new security threats via unregulated access to endpoints used for managing cloud services. Unmanaged devices used for developing and managing infrastructure exposes organizations to threat vectors like web browsing and email.

When the main administrative account is compromised, the attacker does not need to escalate privileges or maintain access to the enterprise network because the main administrative account can do all that and more. How does the organization ensure proper monitoring of misuse of CSP administrative privileges?

Cloud Security Best Practices

Organizations need to review how the system administration and ownership of the cloud account is handled. How many people are managing the main account?

  1. How are passwords and authentication performed?
  2. Who is reviewing the security of this important account?
  3. Who is at fault if there is a security problem?

The CSP or the cloud tenant organization? Initially it seems to be dependent on the problem, but some CSPs want to push that responsibility to the tenant organization.

Most importantly, how does an organization monitor for the existence and misuse of administrative credentials? It is the tenant’s responsibility to secure the administrative account.

The CSPs clearly communicate its criticality and that this is the tenant’s responsibility. CSPs strongly emphasize the implications of weak or no protection. A lack of visibility into the backend CSP management infrastructure means cloud tenant organizations need to identify misuse of CSP access within their own environments when used as a means of intrusion.

Top cloud security threats

In 2017, the Cloud Security Alliance (CSA) conducted a survey to compile professional opinions about what it believed at the time to be the most pressing security issues in cloud computing.

Of the 12 identified concerns, five were related to managing credentials and methods of compromising those credentials to gain access to cloud environments for malicious intent. Those five, in order of severity per survey results, are:

1. Insufficient identity, credential and access management

Lack of scalable identity access management systems, failure to use multifactor authentication, weak passwords, and a lack of ongoing automated rotation of cryptographic keys, passwords and certificates.

2. Insecure interfaces and APIs

From authentication and access control to encryption and activity monitoring, these interfaces must be designed to protect against both accidental and malicious attempts to circumvent policy.

3. Account hijacking

Attackers can eavesdrop on user activities and transactions, manipulate data, return falsified information and redirect your clients to illegitimate sites.

4. Malicious insiders

A current or former employee, contractor or other business partner who has or had authorized access to an organization’s network, systems or data and intentionally exceeded or misused that access in a manner that negatively affected the confidentiality, integrity or availability of the organization’s information or information systems.

5. Insufficient due diligence

Not performing due diligence exposes a company to a myriad of commercial, financial, technical, legal and compliance risks that jeopardize its success.

> Download our Threat Detection in the Cloud White Paper to see our complete analysis of a real Cloud attack

Securing cloud environments is not optional but a critical imperative for enterprises seeking to protect their data and maintain operational resilience. Vectra AI provides cutting-edge cloud security solutions designed to meet the unique needs of modern enterprises, from threat detection and response to compliance and data protection. Contact us to learn how our expertise can help you navigate the complexities of cloud security and ensure your cloud assets are fully protected.

FAQs

What is cloud security?

Cloud security refers to the policies, controls, procedures, and technologies that protect cloud-based systems, data, and infrastructure from cybersecurity threats. It encompasses a broad range of measures designed to safeguard cloud environments against unauthorized access, data breaches, and other cyber risks.

Why is cloud security important for modern enterprises?

Cloud security is crucial because it ensures the confidentiality, integrity, and availability of data stored in the cloud. As enterprises store more sensitive information in cloud environments, the potential impact of security breaches grows. Effective cloud security measures are essential for maintaining trust, ensuring regulatory compliance, and protecting the organization's reputation.

What are the main challenges in cloud security?

Main challenges include managing complex cloud environments, securing data transmission and storage, maintaining visibility and control over cloud resources, addressing compliance and regulatory requirements, and protecting against sophisticated cyber threats that specifically target cloud platforms.

How can organizations ensure data privacy and compliance in the cloud?

Organizations can ensure data privacy and compliance by understanding the specific regulatory requirements applicable to their industry and data types, implementing data encryption both at rest and in transit, and choosing cloud service providers that offer compliance certifications and robust security controls.

What role do identity and access management (IAM) play in cloud security?

Identity and Access Management (IAM) plays a pivotal role in cloud security by ensuring that only authorized users can access specific cloud resources. IAM policies and tools help manage user identities, authenticate users, and enforce access controls, significantly reducing the risk of unauthorized access and data breaches.

How can organizations detect and respond to cloud-based threats?

Organizations can detect and respond to cloud-based threats by implementing security monitoring and threat detection tools that provide real-time visibility into cloud activities. Automated response mechanisms, integrated with incident response plans, enable quick containment and mitigation of threats.

What are best practices for securing cloud applications and services?

Best practices include implementing secure application development practices, conducting regular security assessments and penetration testing, employing end-to-end encryption, and utilizing web application firewalls (WAFs) and API security solutions to protect against application-level attacks.

Can multi-cloud and hybrid cloud environments complicate security?

Yes, multi-cloud and hybrid cloud environments can complicate security due to the increased complexity of managing disparate systems and ensuring consistent security policies across different platforms. Centralized security management and cross-platform security tools are essential for mitigating these challenges.

How does the shared responsibility model affect cloud security?

The shared responsibility model in cloud security delineates the security obligations of the cloud service provider and the customer. While the provider is responsible for securing the infrastructure, customers are responsible for protecting their data, applications, and access controls. Understanding and adhering to this model is crucial for effective cloud security.

What future trends are expected to shape cloud security?

Future trends include the increased adoption of artificial intelligence and machine learning for automated threat detection and response, the rise of zero trust security architectures, enhanced encryption technologies, and greater emphasis on privacy and compliance as regulatory requirements evolve.