5 Myths About Zero Trust in the Cloud, Busted

Historically, enterprises relied on the castle-and-moat (or perimeter) approach to security. It assumes everyone — users and devices — inside a network is inherently good and should be trusted with complete access, while all suspicion is directed to those outside.

The perimeter-based model worked well when organizations’ data resided in on-premises data centers and few users required remote access. But now that most operate in the cloud, this location-based model puts businesses at risk, as it only focuses on who goes in and out of the network, and not what takes place inside it.

This also allows hackers who gain access through the perimeter to move freely, undetected within the network. They can use this unauthorized access to wreak havoc, stealing data and preparing to launch malware, ransomware, denial of service (DoS) and distributed denial of service (DDoS) attacks.

Protecting Cloud Assets with Zero Trust

Traditional security measures have struggled to protect cloud-based assets in such a hostile environment. An identity-based model called zero trust security has emerged as a way for DevSecOps teams to safeguard apps and infrastructure against known and zero-day attacks.

👁 Diagram comparing perimeter and zero-trust security attributes

The zero trust security model operates on the principle of “never trust, always verify.” It requires every user and device that attempts to access an organization’s resources to continuously undergo identity verification.

The model also assumes that an attacker might already be present inside the network and places limits on all user accounts in the network. Therefore, if an attacker compromises an account, they will not be able to move laterally around the entire network.

5 Misconceptions about Zero Trust Security

Zero trust security has garnered a lot of attention, but there are also a lot of misconceptions. Let’s debunk some popular myths:

1. Zero Trust Means No Trust at All.

Reality: Zero trust doesn’t mean a total absence of trust; it means an intelligent, enlightened and very conditional level of trust.

2. Zero Trust Is Only for Large Enterprises.

Reality: Zero trust is relevant and beneficial for organizations of all sizes and industries. From small startups to large enterprises, everyone needs to ensure secure access to their resources.

3. Zero Trust Requires a Complete Overhaul of Existing Infrastructure.

Reality: Zero trust security is not necessarily a complete replacement of traditional measures. It should be regarded as a complementary solution that involves gradually adding security controls to the existing infrastructure.

4. Zero Trust Is a Product.

Reality: Zero trust security is a security framework for protecting information and data. It is not a single product but a comprehensive approach that requires technologies, security policies and procedures.

5. Zero Trust Is Only for the Cloud.

Reality: Zero trust security can be used in all environments including on-premises, cloud-based and hybrid cloud environments.

Implementing Zero Trust Security in the Cloud

In a zero trust cloud security model, access to a network is achieved based on a user’s or device’s identity, location and permissions.

Here is a high-level overview of how it works:

• Identify the attack surfaces. Evaluate all critical assets including endpoints, users, applications, servers and data centers that hackers might target.
• Verify identity. Users and devices are authenticated using single sign-on (SSO) or multifactor authentication (MFA), which adds extra layers of security. This helps ensure all sensitive data is protected from malicious actors, even if one of the authorization methods is compromised.
• Use access control. Once users and devices are authenticated, they are granted access only to the specific data and resources required to complete their task, which is based on the permissions and roles assigned to them. In the cloud, role-based access control (RBAC) or attribute-based access control (ABAC) can enforce least-privilege access to cloud and cloud native applications, containers and microservices.
  👁 Architectural diagram shows how all incoming network requests are verified before being granted access to data and resources.
  
• Use network segmentation. Dividing the network into smaller segments or regions that are properly isolated from one another can reduce lateral movement and the surface area of potential attacks on the network.
• Employ monitoring, analytics and logging. Users and device activities are monitored in real time and carefully analyzed for potential threats. If a threat is found, it is logged and teams are alerted.

The Challenges of Zero Trust in the Cloud

Implementing zero trust security in the cloud can be a challenge for many organizations. Some major challenges are:

Compatibility Issues

Legacy applications might not be compatible or cannot be integrated with modern security measures like zero trust. This creates security gaps in the system, which may require strategic updates or replacement.

The Cultural Shift

Implementing zero trust in the cloud creates stricter access controls. This often requires a shift in the organization’s existing security culture, which can put a strain on the work experience.

For example, employees who are used to somewhat seamless access to resources may bristle against authentication hurdles with multiple verification steps, which could affect their productivity.

Cloud Compliance and Governance

Many organizations operate in regulated industries like health care and finance that have to comply with strict data protection regulations such as HIPAA and PCI DSS. Implementing zero trust in the cloud can make it challenging to comply with these rules, as sensitive data may be scattered across multiple locations and accessed by multiple users.

Organizations should apply encryption techniques for data at rest or in transit and also set up access control measures and logging of all access points to sensitive data.

Risk of Vendor Lock-In

Cloud vendor lock-in can be a significant challenge for businesses, as becoming overly dependent on a particular vendor can limit flexibility and increase costs.

To tackle vendor lock-in, organizations can:

• Prioritize open standards and interoperability when selecting security solutions.
• Consider adopting a multicloud approach.
• Use cloud native security solutions like AccuKnox.

Implementation Costs

Setting up zero trust security in the cloud can be quite resource-intensive, including hiring skilled personnel, training internal staff, acquiring new technology and other cloud costs.

Overcoming the Challenges

Fortunately, these challenges are not insurmountable. Here are three strategies to employ.

Adequate Planning

Create a strategic plan that includes an inventory of all sensitive and non-sensitive data and resources in the cloud infrastructure, a detailed roadmap of how you’ll implement zero trust, which technologies you will use and a plan to educate employees about the changes and their importance.

Phase the Implementation

Gradually introduce zero trust into your security system to avoid overwhelming users. The goal is to prioritize critical assets and then proceed further until the entire system is secured.

Collaborate

IT/DevSecOps and security teams need to work together. IT/DevSecOps teams should provide comprehensive information about the cloud design and infrastructure, while security teams identify potential risks and develop solutions to mitigate them.

Summary

As businesses continue to navigate the complexities of the cloud, properly securing cloud workloads using zero trust stands out as the best solution to addressing this dynamic environment of threats.

AccuKnox Zero Trust CNAPP (Cloud Native Application Protection Platform) with one-of-a-kind inline mitigation extends zero trust security to the cloud. Its unified platform and full suite of tools including Cloud Security Posture Management (CSPM), Cloud Workload Protection Platform (CWPP), application security, cloud detection and response, Kubernetes security and Infrastructure as Code (IaC) help protect cloud assets from advanced security threats.

👁 Diagram of AccuKnox Zero Trust CNAPP

With AccuKnox, organizations can make the shift from traditional perimeter-based approaches to a zero trust framework. Its comprehensive and proactive approach helps to mitigate zero-day exposure, improve coverage and accelerate incident response time to reduce your overall security risks.