I work as a Cyber Security Consultant. I care about cybersecurity, GNU/Linux, and open source. Debian has been my daily driver since 2013. Outside the terminal I watch Neon Genesis Evangelion and My Hero Academia, and I still back the GOAT, Cristiano Ronaldo.

I first learned hacking on the Indonesian underground forum HN Community, once the largest hacker-newbie community in Indonesia.

• OSEPOffSec Experienced Penetration Tester
• OSCPOffSec Certified Professional
• CRTPCertified Red Team Professional
• CARTPCertified Azure Red Team Professional
• PNPTPractical Network Penetration Tester
• eCPPTCertified Professional Penetration Tester
• CRTOCertified Red Team Operator
• eWPTXWeb Application Penetration Tester Extreme
• CAPCertified AppSec Practitioner
• CRTACertified Red Team Analyst

Almost everything I know is self-taught, so I stay in the community. I am involved with ZeroByte.ID.

I write about cybersecurity, GNU/Linux, and open source on LinuxSec and Medium.

Between client pentests I keep a lab habit:

HackTheBox TryHackMe Red Team Labs HackMyVM Root Me

Most of what I publish is around cybersecurity:

• TL-01Bash PAMnotify Telegram notifier via PAM sessions.
• TL-02Bash TLDHunt Domain availability checker.
• TL-03Python AzSubEnum Azure service subdomain enumeration.
• TL-04Python scscanner_py Massive HTTP status code scanner.

The rest is on GitHub.

I report vulnerabilities in open source software and get them assigned CVE IDs. 100+ CVEs credited so far:

Wordfence Threat Intel Patchstack Database

Have a project in mind? Write me.

yuyudhn@gmail.com