Fintech Security Assessment: How we identified a critical vulnerability

Fintech Security Assessment- How we identified a critical vulnerability

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In the ever-evolving landscape of financial technology, ensuring robust security measures is paramount to safeguarding sensitive data and maintaining trust among customers.

Today, we are privileged to present an insightful analysis of a recent security assessment conducted for our esteemed fintech client. With meticulous attention to detail and a focus on industry best practices, we diligently scrutinized every nook and cranny of the client’s system to identify any vulnerabilities. In this blog post, we will unveil a critical vulnerability that was unearthed during the assessment. Join us as we delve into the intricate world of application security and outline the steps taken to address this pressing concern.


The fintech business is renowned for its exceptional services and boasts an impressive user base of over 5,000 individuals. They recognized the paramount importance of ensuring the utmost security for its cutting-edge AWS cloud-based web application. In accordance with this commitment to safeguarding user data and maintaining the highest industry standards, a comprehensive security assessment was meticulously conducted during the beta testing phase.


Access To AWS Infrastructure – Fintech Security Assessment

During our preliminary testing phase, our highly skilled consultant adeptly detected the presence of temporary access credentials. They were linked to the test user accounts which could be identified in the response after successful authentication.

Fintech Security Assessment: How we identified a critical vulnerability

With this valuable information in hand, we swiftly established an initial entry point within the AWS infrastructure. Shortly thereafter, we successfully gained access to the client’s S3 buckets, where an alarming amount of sensitive data was uncovered. This included SQL database dumps as well as an AWS account backup that contained confidential tokens.

It is worth mentioning that we possessed the capability to escalate our privileges of the client’s AWS instance as a super-admin. However, in strict adherence to our client’s policies and commitment to maintaining a strong ethical stance, we promptly relayed these critical vulnerabilities to the appropriate parties.

Our proactive and responsible approach to promptly reporting these vulnerabilities demonstrates our commitment to upholding the highest standards of professional conduct. By safeguarding the interests and security of our clients, we consistently strive to maintain their trust and confidence in our services.

As part of our continuous security assessment approach, we maintained vigilance and capitalized on the client’s failure to revoke access tokens from previous engagements, thereby obtaining direct access to the super-admin account. The gravity of this situation underscores the paramount importance of proactive and iterative security measures. A breach of these tokens by a malicious actor could result in substantial financial losses for our client.

Our ability to unearth these vulnerabilities can be attributed to Bluefire Redteam‘s distinctive security operations methodology. Our innovative approach ensures the effectiveness and efficiency of our security services, setting us apart as a trusted and reliable security vendor.



In conclusion, the thorough fintech security assessment carried out by our team has successfully identified a critical vulnerability in our client’s application. By employing advanced techniques and conducting comprehensive tests, we were able to expose this vulnerability, enabling our client to take immediate action to rectify the issue. The importance of such assessments cannot be overstated; in today’s rapidly evolving digital landscape, safeguarding the integrity and security of financial technology systems is paramount.

If you’re interested in availing of our services, we invite you to schedule a meeting with us. We are eager and well-prepared to collaborate with you in crafting a tailored solution that aligns with your unique requirements, safeguarding your organization’s security and success.

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