O Legado de um CEO: em conversa com João Modesto para a revista Pontos de Vista
Outubro 15, 2026O Legado de um CEO: em conversa com João Modesto para a revista Pontos de Vista
Outubro 15, 2026Caso de estudo
Hardening Cloud & Application Security for a UK Multinational Insurer
Cybersecurity Review
The client is a premier multinational insurance enterprise based in the United Kingdom, delivering specialized risk coverage, life insurance, and corporate underwriting services to millions of customers globally.
Operating within a strictly governed financial services regulatory framework, the company relies on a high-availability technological ecosystem. This environment integrates cloud-hosted internal systems with external SaaS vendor platforms to handle sensitive customer claims and business transactions.
Desafio
The client required an independent, deep-dive security evaluation of a business-critical internal application hosted in the cloud and integrated with a third-party SaaS provider. With sensitive policyholder data and regulatory compliance on the line, uncovering potential architectural gaps and vulnerabilities was an immediate priority.
The primary challenges centered on three critical areas:
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Application Layer Vulnerabilities: Potential security flaws within custom source code and unverified open-source dependencies that could expose the application to OWASP Top 10 risks.
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Cloud Infrastructure Misconfigurations: Configuration drift and security gaps within their AWS deployment that could inadvertently grant unauthorized access or elevate privileges.
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Communication & API Vulnerabilities: Unverified API request handling, untested communication channels between cloud infrastructure and external SaaS systems, and unknown resilience against Denial of Service (DoS) scenarios.
Without a targeted, expert security review, the organization faced elevated operational exposure, potential regulatory non-compliance, and the risk of undetected breach vectors.
O cliente
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A Estratégia
Crossjoin Solutions assigned a dedicated cybersecurity consultant to execute an end-to-end security review across the client's application stack, AWS cloud infrastructure, and communication architecture.
The engagement leveraged an actionable, four-part methodology:
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Static Code & Dependency Analysis (SAST & SCA): Conducted rigorous static application security testing to identify coding flaws, analyzed third-party libraries for known CVEs, and eliminated false positives through expert code verification, mapping all vulnerabilities directly to the OWASP Top 10.
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AWS Cloud Infrastructure Audit: Evaluated cloud resource configurations against CIS benchmarks and cloud security best practices, targeting identity access management policies, storage configurations, and network segmentation.
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Communication & Resilience Testing: Assessed API design principles and request handling workflows to identify logic flaws, while implementing Denial of Service (DoS) and Chaos Engineering methodologies to test real-world resilience under strain.
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Actionable Risk Prioritization: Delivered an executive-ready risk matrix with granular control classifications (compliant, partially compliant, non-compliant), accompanied by reproducible testing steps and structured remediation playbooks.
Os Nossos Resultados em Números
OWASP Top 10 vulnerability mapping
AWS cloud configurations audited
Unaddressed critical security flaws
Unified remediation roadmap
Resultados de negócio e Principais Métricas
Executing this cloud application security review provided the UK insurer with actionable clarity into their technical security posture, empowering engineering teams to remediate critical vulnerabilities before production exposure. By resolving AWS cloud misconfigurations and securing external SaaS communication channels, the client drastically reduced the risk of data breaches and avoided costly operational interruptions.
Beyond addressing immediate tactical risks, the engagement embedded secure development lifecycle (SDLC) best practices and secure coding guidelines across the client's internal development teams. The insurer successfully validated adherence to stringent financial regulatory mandates, strengthened API reliability, and established a dependable, fault-tolerant cloud architecture capable of supporting continuous digital transformation.
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