SOCIAL MEDIA
LinkedIn: Sebastian ‘Seebusch’ Szczepaniak
GitHub: Seebusch
Discord: DeepSeaBusch
YouTube: Sebastian ‘Seebusch’ Szczepaniak
CV
Headway Steuerberatung GmbH
Chief Information Officer & Chief Information Security Officer
Nov. 2019–presentAccountant, Chief Information Officer & Chief Information Security Officer
Sept. 2017–Nov. 2019Accountant & Chief Information Officer
Jan. 2015–Sept. 2017Accountant & IT-Staff
Feb. 2012–Jan. 2015IT-Staff & Assistant (part time)
Sept. 2010–Feb. 2012ManpowerGroup GmbH
IT-Staff (summer internship)
Jun. 2007–Jul. 2007IT-Staff (summer internship)
Jun. 2006–Jul. 2006
PUBLICATIONS
HACKING/CTF PROFILES/PARTICIPATIONS
WeChall: Seebusch
TryHackMe: Seebusch
HackTheBox: Seebusch
OverTheWire: Seebusch
HackerONE: Seebusch
UnderTheWire: no profiles
picoCTF: Seebusch
SecureFlag: Sebastian Szczepaniak
CyberDrainCTF 2021 Placement: 36/281
CyberDrainCTF 2022 Placement: 61/401
CyberDrainCTF 2023 Placement: 32/341
UIUCTF 2021 Placement: 228/658
UIUCTF 2022 Placement: 123/395
GuidePoint Security CTF 2021: 76/274
Samsung’s SSTF2021 CTF: 267/1236
corCTF 2021: 482/904
corCTF 2022: 913/978
MetaCTF2021: 553/1346
picoCTF 2022: 1455/7794
Hacker’s Playground 2022: 111/736
Hack the Boo 2022: 1124/3190
Cyber Apocalypse 2023: 967/6482
CERTIFICATES
WGET CERT/(ISC)²
(ISC)² – Certified Information Systems Security Professional (CISSP)
WGET CERT/BMD
BMD Business Software – Certified Tax Advisor – Financial Accounting – Client Advisor (BMD NTCS)
WGET CERT/SECUREFLAG
OWASP – Secure Coding in Python (Introductory Secure Coding in Python)
OWASP – Secure Coding in Python (Intermediate Secure Coding in Python)
OWASP – Secure Coding in Python (OWASP Top 10 in Python)
OWASP – Secure Coding in Python (Cryptography in Python)
OWASP – Secure Coding in C/C++ (Introductory Secure Coding in C/C++)
OWASP – Secure Coding in C/C++ (Intermediate Secure Coding in C)
OWASP – Secure Coding in Java (Introductory Secure Coding in Java)
OWASP – Secure Coding in Java/Spring Boot (Introductory Secure Coding in Java)
OWASP – Secure Coding in JavaScript (Introductory Front End Secure Coding in JS)
OWASP – Practical Application Security (Introductory Practical Application Security – OWASP TOP 10)
WGET CERT/OWASP
OWASP – OWASP Core Concepts Security Belt
WGET CERT/TRYHACKME
THM – Pre Security Learning Path
THM – Introduction to Cyber Security Learning Path
THM – Web Fundamentals Learning Path
BADGES/TROPHIES
WGET TROPHIES/SECUREFLAG
C – Use of Dangerouse Function
Java – Unvalidated Redirects & Forwards
Java – Server – Side Request Forgery
Python – Broken Authentication
Python – Cross-Site Request Forgery
Python – Sensitive Information Exposure
Python – Security Misconfiguration
Python – Unsafe Deserialisation
Python – Unrestricted File Download
Python – Inadequate Input Validation
WGET BADGES/TRYHACKME