How can I hire CyberAkanksha for software development or cybersecurity?

You can submit your project brief via the contact form on cyberakanksha.pages.dev/contact or email directly. Akanksha evaluates technical requirements and responds within 24 business hours.

What technologies and frameworks does CyberAkanksha specialize in?

We specialize in modern web architectures (Next.js, React, TypeScript, Node.js), mobile development (React Native, Flutter), AI/ML integration (Python, LLMs, Vector DBs), cloud platforms (Cloudflare, AWS, Docker), and offensive cybersecurity (penetration testing, OWASP Top 10, API security).

Does CyberAkanksha sign Non-Disclosure Agreements (NDAs)?

Yes, mutual NDAs are standard practice before reviewing confidential business logic, sensitive repositories, or proprietary credentials.

Back to All Selected Work

Cybersecurity· 2025Confidential Client

Fintech Core Banking API & Auth Hardening

Offensive vulnerability assessment and zero-trust authentication refactor for high-volume banking APIs.

A comprehensive security assessment and architecture overhaul of a core transaction gateway processing millions in daily disbursements. Eliminated Broken Object Level Authorization (BOLA) risks and enforced mutual TLS.

Client Profile

Confidential Digital Banking Institution

Engagement Type

Completed Engagement

Core Discipline

Cybersecurity

Timeline

2025

System Architecture Case StudyID: fintech-api-security-hardening

Services Delivered

API Penetration TestingOAuth2 / OIDC Token Vault HardeningVulnerability Remediation GuidanceAutomated CI/CD Security Gate (DevSecOps)

Context & Pain Points

The Challenge

The client was expanding rapidly to integrate partner fintech applications. Their API gateways were exhibiting complex state transitions where contextual user permissions were insufficiently validated on nested transaction endpoints, risking Broken Object Level Authorization (BOLA).

Strategic Targets

Core Objectives

Perform exhaustive grey-box penetration testing on 40+ REST and GraphQL endpoints

Map authorization boundaries and test token replay attack vectors

Redesign stateless JWT token issuance with short-lived cryptographically signed claims

Achieve zero critical and zero high-severity findings prior to banking regulator audit

Execution Blueprint

Approach & Architecture

We executed an offensive testing engagement covering OWASP API Security Top 10 vulnerabilities. After identifying edge-case authorization bypasses in account-switch flows, we provided developer-friendly refactor blueprints and automated verification tests.

Decoupled authentication token issuance from user resource queries using cryptographic claims

Implemented strict rate-limiting per API token with sliding-window Redis counters

Enforced Mutual TLS (mTLS) for all institutional partner webhooks and microservices

Defensive Security & Compliance Measures

Every engagement incorporates zero-trust engineering standards to ensure data sovereignty, cryptographic integrity, and compliance readiness.

Defense Factor 01

Strict token revocation list (CRL) distributed across edge caching layers

Defense Factor 02

Constant-time string comparison algorithms to prevent cryptographic timing attacks

Defense Factor 03

Automated secret scanning and SAST rules embedded in pull-request validation pipelines

Results & Verification

Verified Outcomes

100% Critical Remediations

All identified authorization flaws resolved and retested before deployment

Passed Compliance Audit

Successfully satisfied regional central bank security standards

Zero Disruption

Assessment and hotfixes deployed with zero downtime for existing active bank customers

Technologies & Frameworks Utilized

OAuth2 / OIDCBurp SuiteGolangPostgreSQLCloudflare WAFmTLSDocker

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Aurora: Tailored Operations & Sales CRM

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