Dean Clark, Group Chief Technology Officer for GFT
The banking sector is transforming more and more, with banks under pressure to meet customers’ evolving expectations. This means that even the most traditional institutions have to move away from legacy systems and adopt modern technologies such as cloud computing and AI. The aim of this shift is not just to keep pace with digital-native competitors, but also to improve operational efficiency and deliver better customer experiences.
However, innovation brings new challenges. Transitioning from centralised mainframes to cloud-based platforms is a complex process that can’t happen overnight. Amid this transformation, banks must ensure that security remains a top priority. Striking the right balance between modernisation and robust security is essential to building and maintaining consumer trust in the digital age.
Balancing agility with security
Multicloud is a key component of digital transformation strategies in the financial sector. Many banks are relying on hybrid multicloud to modernise and keep up with the evolving tech landscape. In the meantime, new digital banks are launching entirely on cloud-native platforms, which helps support agility and scalability from day one.
Cloud technologies offer many advantages, including improved performance, flexibility and faster innovation. However, despite these benefits, they do come with security challenges. Cloud infrastructure, often built and managed using Infrastructure as Code (IaC), can include some vulnerabilities and give an entry point into a bank’s system to malicious actors. As such, ensuring that IaC adheres to best practices is essential to avoid misconfigurations or exploitable vulnerabilities as early as possible.
The protection of consumer data must also be central to any digital transformation strategy. Security must be deeply embedded not only in backend infrastructure but also in the user-facing layers such as web portals and mobile applications. This is critical to maintain consumer trust and improve retention.
Why a unified security platform is essential
When undergoing digital transformation, financial institutions need a unified security solution to help streamline the security management process by having all the necessary tools in one place. In fact, a unified security solution is built on three interconnected pillars. First, security must be embedded directly into development pipelines. This integration helps identify and mitigate risks and misconfigurations early, before they can impact production. Second, through continuous monitoring and management of cloud assets, banks can gain more visibility and control over their security posture. Third, runtime protection safeguards cloud workloads, web applications and APIs through tools like cloud threat detection, host security, container security, serverless security, and web application & API protection. Together, these pillars help to establish a robust security framework. This way, digital banks can minimise risks, streamline operations and ensure compliance with regulatory demands.
The benefits of ‘zero trust’
Modern cloud-native banks rely on ‘zero trust’ security models more and more. ‘Zero trust’ refers to the principle according to which every request to access an organisation’s system should be carefully reviewed. This means that no user or system is trusted by default. They’re all subject to identification and authentication checks. This helps set clear boundaries between the applications the users are accessing and the resources available in the cloud. And even after access has been granted, all activity is monitored on an ongoing basis to identify potential malicious behaviour that could compromise digital banking systems. This continuous verification enhances visibility into potential threats and facilitates compliance with regulatory standards.
To further reinforce security, mutual transport layer security (TLS) can be implemented as a core design principle, enabling secure authentication with third-party entities over the internet. By adopting such measures, digital banks can build a resilient security foundation that safeguards against evolving threats whilst preserving customer trust and operational integrity.
The example of Salt Bank
Salt Bank is a next-generation digital bank launched in Romania. It serves as a good example of a financial institution that embedded security into its digital banking platform from the start. Salt Bank was built and launched in under 12 months, showcasing the power of an approach to innovation that heavily relies on security.
Salt Bank implemented a range of advanced security measures, including zero trust architecture, threat modelling, cloud security posture management, and automated security operations, guided by this security-by-design philosophy. These tools helped the bank implement a strong defence against cyber threats whilst still focusing on improving customer experience.
Central to Salt Bank’s strategy was Engine by Starling, a SaaS platform designed specifically for digital banking, paired with Palo Alto Networks’ Prisma Cloud. Prisma Cloud played a key role in securing the bank’s cloud infrastructure, offering capabilities such as misconfiguration monitoring, risk detection, remediation and compliance management. Together, these technologies provide a unified and efficient approach to managing security in a complex cloud environment.
The future of modern banking is all about security
As digital transformation accelerates across the financial sector, companies must keep security at the top of their agenda. Whilst innovating is key to keeping up with evolving trends and changing customer expectations, it can’t be done without prioritising security. If security isn’t embedded in every layer of an organisation’s digital infrastructure, vulnerabilities may be introduced within the system and easily exploited by malicious actors. And once cyber attackers are in the system, everyone knows it can lead to chaos.
But security isn’t just for defensive purposes, it’s also a strategic advantage. In a climate of growing digital distrust, the most secure bank doesn’t just win compliance, it also wins customers. By choosing to turn advanced security into a visible product feature, not just an internal practice, banks can build marketable trust and differentiate from fintech challengers who may cut corners in pursuit of speed.
