Building a Secure Cloud Foundation for Regulated Industries
George Ralph of RFA highlights the importance of strong cloud security practices for organisations in highly regulated industries, with a focus on shared responsibility and risk management.
Organisations operating in highly regulated industries like finance and healthcare need to be more vigilant about the security of their cloud resources than most others. Yes, moving to the cloud brings several advantages, including access to the robust security tools offered by cloud providers and many third-party options.
However, organisations still have a major responsibility to use these tools correctly and apply the right strategies to stay ahead of the sophisticated attacks attackers continue to develop. In today’s article, I’ll discuss how financial firms can build a strong security foundation to deal with these threats. But first, I’d like to briefly talk about the cloud advantage and the shared responsibility model.
The Cloud Advantage - and the Shared Responsibility Model
Using cloud infrastructure offered by the likes of Azure and AWS gives financial firms access to stronger security than most could build on their own, but it also introduces new responsibilities.
Cloud providers secure the infrastructure - this includes data centres, hardware, networking, and many core services. On the other hand, your firm is responsible for securing its data, identities, configurations, and how your teams access and use the cloud.
Most major platforms offer powerful built-in tools like IAM for controlling access, encryption for protecting data (at rest and in-transit), and logging and monitoring services for visibility. These tools form the foundation, but many firms also rely on third-party solutions to strengthen areas like compliance, threat detection, and posture management.
Even with all these capabilities, misconfiguration is still the biggest cloud risk. Firms need to know how to use the available tools (whether built-in or third-party) to keep their data and other cloud resources protected from attackers. This is why understanding the shared responsibility model is critical to building a secure cloud environment.
In the next section, I will look at how firms can build a secure foundation to stay ahead of modern cloud attacks.
Key Building Blocks of a Strong Cloud Security Foundation
A strong cloud security foundation for your firm should start with getting the basics right. These five core building blocks help firms reduce risk, protect sensitive data, and stay ready for today’s fast-evolving threats.
1. Identity and Access Management (IAM)
Identity and access management is one of the most important parts of cloud security. Several studies show that more than 80% of attacks begin by exploiting weaknesses in IAM systems. Here are the key aspects of IAM that firms must take care of:
Least-privilege approach: Firms should follow the least-privilege approach, giving users only the access they need and nothing more.
Multi-factor Authentication: Whether you’re using complex passwords or passkeys, adding MFA as an extra security layer should be a top priority. MFA must be enabled everywhere, especially for admin accounts, to reduce the risk of unauthorised access.
Zero Trust: Adopting Zero Trust principles helps ensure that every request (whether internal or external) is verified before access is granted.
Role-based access: Finally, using role-based access controls (RBAC) makes it easier to manage permissions based on job roles rather than individuals. It also reduces errors and improves security consistency.
2. Data Protection
Research by The Economist in 2017 showed that data had become more valuable than oil, and this is even more true for financial firms that handle large amounts of sensitive information. Financial data must be protected at every stage using the following strategies:
Data encryption: Encryption at rest and in transit should be implemented to ensure that even if data is intercepted or stolen, it remains unreadable. For highly sensitive information, firms should use tokenisation and data masking, which replace real values with placeholders to reduce exposure.
Clear data storage policies: These include where data can live, who can access it, and how long it should be retained. This approach helps prevent accidental leaks and strengthen regulatory compliance.
3. Network Security in the Cloud
Just like on-premise, network security is just as important in the cloud. Cloud providers give firms the tools to control traffic flow, segment networks, and block unwanted access, making it easier to reduce risks and keep critical systems protected. Let’s discuss some of the key strategies firms can use to improve their network security:
Network segmentation: A secure cloud network starts with segmentation, which separates workloads so that a breach in one area cannot easily spread to another.
Protect network perimeter with firewalls: The use of firewalls and Web Application Firewalls (WAF) adds layers of protection against malicious traffic and application-level attacks.
Security endpoints: Firms should also secure access to the cloud through protected endpoints. This ensures that devices are authenticated before connecting to internal systems. Firms must also implement controls that block unsecured endpoints from accessing the network.
4. Continuous Monitoring and Threat Detection
Threats evolve quickly, so continuous visibility is essential. Your cloud environment could be secure now, but then get compromised in the next five minutes. By using SIEM tools and other cloud-native monitoring tools, firms can collect logs and events in real time, giving their security teams a full picture of what’s happening across their environment.
These tools can also detect any anomalies in your cloud environment. Anomaly detection helps identify unusual behavior - whether a suspicious login, rapid data transfer, or unexpected configuration change. Combined with real-time alerts and a strong incident response process, firms can catch and contain threats before they escalate.
5. Secure Configuration and Compliance Automation
Misconfigurations are one of the most common causes of cloud breaches. One recent study shows that about 23% of cloud security incidents are directly caused by misconfigurations. Firms can use tools like CSPM (Cloud Security Posture Management) and CWPP (Cloud Workload Protection Platforms) to automatically check for risky settings and enforce best practices.
Regular audits and configuration scans also help teams stay ahead of vulnerabilities and human errors. For financial firms, automating compliance checks is also crucial to ensure systems stay aligned with strict regulations and reduces the workload on internal teams.
Other Best Practices for Financial Firms
Beyond the core security pillars we have discussed in the previous section, here are additional practices that help financial firms strengthen their cloud posture.
Build a strong cloud governance framework: A clear governance framework helps define how cloud resources are used, who is responsible for what, and how security policies are enforced. This practice reduces confusion and ensures consistent, secure operations across the organisation.
Train employees continuously: Human error is still one of the biggest security risks. Your team’s security knowledge has a major impact on how safe your cloud environment is. Ongoing training keeps your teams updated on phishing threats, secure cloud usage, and new attack trends, helping them make safer decisions.
Conduct regular penetration tests: Pen testing helps uncover weaknesses before attackers do. It allows firms to test their cloud systems under real-world conditions and fix gaps quickly. Firms can also consider rewarding security researchers and enthusiasts who discover any loopholes in their systems; a practice known as a bug bounty program.
Adopt a defense-in-depth approach: Layered security - across identity, data, network, and applications - creates multiple security barriers to block attackers. Even if one control fails, others remain in place to protect the environment.
Prepare and rehearse an incident response plan: Even the strongest security setup can have loopholes that attackers may spot before you do. That’s where an incident response plan becomes essential. A well-defined incident response plan helps teams react fast during a breach. But having one without testing it is not enough. Rehearsing it ensures everyone knows their role and can respond without delay.
Use automation to reduce manual errors: Using automation tools can enforce security policies, correct misconfigurations, and manage patches more effectively than manual efforts. This reduces the chance of mistakes and improves overall security consistency.
Key Takeaway
Moving to the cloud offers big benefits: better performance, more flexibility, and access to stronger security tools. But it also expands the attack surface, and firms need to stay alert as threats become more advanced. A strong foundation is key. This means using solid identity controls, encrypting data, securing the network, monitoring continuously, and keeping configurations tight.
Your security team can lead this work, but everyone in the organisation should understand their role. For many firms, outsourcing cloud security, especially the foundational pieces, is often the smartest choice. That’s exactly what we do at RFA. We help financial firms build the secure foundation they need to protect their environment with confidence.
Future-Ready IT for Financial Leaders.
RFA delivers advanced cybersecurity and IT solutions tailored to the financial sector's needs. With a focus on white glove service, RFA ensures that their technology supports their clients' complex demands, enhancing security and business operations.
