Enterprise-grade Security for Multi-Channel Banking Applications
Enterprise-grade Security for Multi-Channel Banking Applications
CASE STUDY
Business Overview
A leading Saudi bank partnered with NeST Digital to design and secure multi-channel banking applications spanning web, desktop, IVR, and Base24 platforms. Given the high-risk nature of financial transactions and regulatory scrutiny in the Middle East, security was mandated as a core, non-negotiable requirement.
NeST Digital was engaged to perform Threat Modelling (Design Phase), Secure Code Review (Development Phase) and to conduct penetration testing to ensure production-grade resilience.
Challenge
The bank faced multiple security and delivery complexities:
- Threat Model multi-channels including web, desktop applications and Base24 applications.
- Increasing attack surfaces & need to uncover vulnerabilities without full source-code exposure (Black Box Pen Testing)
- Strict regulatory expectations for secure-by-design banking platforms
- Requirement to validate fixes without impacting release timelines
Solution
The Team executed a security-first delivery and testing program:
- Secure SDLC Implementation
- Applied Secure-SDLC from the requirements phase onward
- Embedded security checkpoints across design, development, testing and deployment.
- Identified 80+ security risks from 150+ Threat Lists derived from the Threat Model and mitigated them by upgrading the architectural design of web, desktop and Base 24 applications.
- Authored Secure Coding Guidelines for the respective technologies including C# (Web and Desktop), C (Base 24).
- Implemented a Secure Code Review process with a Start Green Security Checkpoint.
- Black-Box Penetration Testing
- Conducted black-box penetration testing across all channels
- Covered both thick and thin client architectures
- Executed 240+ security test cases
- Vulnerability Identification & Remediation
- Identified 40 critical and high-severity vulnerabilities
- Provided clear, actionable mitigation guidance for each issue
- Worked closely with engineering teams to accelerate remediation
- Validation & Hardening
- Performed two additional validation cycles of Pen Testing post-fixes
- Ensured vulnerabilities were fully resolved and no regressions introduced
- Medium and low-risk issues were prioritized into future releases based on CVSS scores
Benefits
- Hardened Multi-channel banking platforms across all customer touchpoints
- Hardware vulnerabilities for ATM running BASE 24 applications helped Bank to work with hardware vendors to remediate and re-procure secure hardware.
- Critical and high-risk vulnerabilities eliminated before production
- Security embedded across the lifecycle, not bolted on at the end
- Risk-based remediation aligned to CVSS impact and release planning
- Enhanced regulatory confidence for a Middle East banking environment
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