// Security Researcher & Developer
CyberTKR
I build end-to-end encrypted systems, take apart proprietary protocols, and release the tooling as open source. If it talks over the wire, I want to know what it's saying.
CryptyX
Private-by-design messenger — end-to-end encrypted by default.
TimeSheetX
Work-hour tracking for freelancers, employees and managers — timesheets kept clean, every day more productive.
line-nodejs
LINE bot framework for Node.js — clean API surface over LINE's messaging protocol.
CyberTK-Self
Self-bot automation toolkit — the most-starred project on the account.
IpaSigner
Cross-platform IPA signing tool with Qt6 GUI & CLI. Certificate matching, bundle-ID adaptation, iOS app signing.
CyberJS
JavaScript utilities and experiments around messaging protocols.
Simple-LINELIB
Minimal Python client for LINE's unofficial API — protocol research distilled into a library.
qrLoginV3
Implementation of LINE SecondaryQrCodeLoginV3 — QR-based auth flow, reverse engineered.
33 Public Repositories on github.com/CyberTKR
I'm Tolga — a developer and security researcher based in the Netherlands, on GitHub since 2017.
My main line of work is private-by-design software: currently an end-to-end encrypted messenger built so that no service in the middle — including mine — can read your messages.
The other half is protocol research: reverse engineering closed messaging platforms, documenting auth flows, and turning the findings into open-source libraries that others can build on.
principle: no external service should ever see your data. full isolation, E2E mandatory.
