Yunus Yildirim
Red Team Member at CRYPTTECH
Istanbul, Türkiye Turkey
Summary
👤
Senior🎓
Top SchoolYunus Yildirim is an experienced InfoSec professional and Red Team member based in Istanbul with over a decade of hands-on practice in offensive security and leadership roles. He serves on the Synack Red Team while also acting as CISO at CRYPTTECH, blending tactical red-teaming with strategic security governance. His background spans security analysis to engineering and executive responsibilities, giving him a full-spectrum view of risk, detection, and remediation. An active contributor to open-source tooling for reconnaissance—most notably improving email recon features in SimplyEmail—he focuses on pragmatic enhancements that accelerate assessments. Fluent in both technical implementation and security program development, he brings a maker’s mentality to hardening systems and uncovering real-world attack paths. Known for being an “InfoSec Swiss Army Knife,” he pairs deep technical craft with the ability to translate findings into organizational improvements.
12 years of coding experience
5 years of employment as a software developer
Lisans Derecesi, Bilgisayar Mühendisliği, Lisans Derecesi, Bilgisayar Mühendisliği at Yıldız Teknik Üniversitesi
Turkish, kürtçe, English
Github Skills (10)
plugin-development10
python10
drupal-module10
package-development10
networking9
api-design9
apidoc9
webscraping9
api9
beautifulsoup9
Programming languages (3)
Github contributions (5)
SimplySecurity/SimplyEmail
Nov 2015 - Feb 2016
Email recon made fast and easy, with a framework to build on
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 3 PRs, 1 comment in 2 months
Contributions summary:Yunus primarily worked on fixing bugs and implementing features related to email reconnaissance tools within the project. They addressed issues with the display of domain-related emails, improved PDF file handling, and installed necessary dependencies. Furthermore, the user added new functionalities such as a PasteBin search, along with fixing typos. Their work focused on enhancing existing modules and tools.
emailsreconemailkaliemail-recon
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