Security Researcher | Vulnerability Discovery & Responsible Disclosure
Independent security researcher based in Japan with 8 years of IT engineering experience.
Focused on vulnerability research, penetration testing, and responsible disclosure.
| Platform | Machines Completed |
|---|---|
| OffSec Proving Grounds | 127 |
| Hack The Box | 44 |
| TryHackMe | 84 |
| Total | 255 |
Target OS breakdown: Linux 179 / Windows 76
All writeups published in English & Japanese (EN/JA) at morimori-dev.github.io
| Certification | Issuer |
|---|---|
| OSCP (Offensive Security Certified Professional) | OffSec |
| CPTS (HTB Certified Penetration Testing Specialist) | Hack The Box |
| CJCA (HTB Certified Junior Cybersecurity Associate) | Hack The Box |
| RISS (Registered Information Security Specialist) | IPA, Japan |
| AWS Certified Security – Specialty | AWS |
| AWS Certified Solutions Architect – Professional | AWS |
Vulnerability Research: Web application testing, Active Directory attacks, ADCS exploitation, Kerberos abuse
Tools: Burp Suite Pro, BloodHound CE, Nmap, feroxbuster, Impacket, Certipy, Ligolo-ng
Infrastructure: Linux (10 years), AWS/Azure/GCP, Windows Server, Network Engineering
Languages: Japanese (native), English (professional)
- Blog: morimori-dev.github.io
- LinkedIn: in/nozomu-sasaki
- Credly: class_nzm
Interested in discussing vulnerability research, collaborating on security tooling, or responsible disclosure coordination? Feel free to reach out.