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Kwabena Mensah

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Mobile security engineer at an Accra fintech, conducting penetration tests on Android and Flutter applications. Identified the JWT storage anti-pattern in three popular Flutter packages and submitted upstream patches.

mobilesecurityflutterauth

Articles by Kwabena Mensah(6)

Using Either for error handling in Flutter

A practical, code-first guide to using Either for error handling in Flutter. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

fluttererror-handlingfunctionaldartz

6 March 2026

Flutter + WebSockets: real-time communication

A practical, code-first guide to flutter + WebSockets: real-time communication. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterwebsocketsrealtimenetworking

11 January 2026

Certificate pinning in Flutter

A practical, code-first guide to certificate pinning in Flutter. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

fluttersecuritynetworkingcertificate-pinning

6 November 2025

Shared preferences vs secure storage: when to use which

A practical, code-first guide to shared preferences vs secure storage: when to use which. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterstoragesecuritypreferences

6 October 2025

GraphQL in Flutter with ferry

A practical, code-first guide to graphQL in Flutter with ferry. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

fluttergraphqlferrynetworking

18 August 2025

Kwabena Mensah — ANN Tech — ANN Tech