Skip to content
View GeriHB's full-sized avatar

Block or report GeriHB

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
GeriHB/README.md

Halil Berisha

Cybersecurity professional with hands-on experience in security research, offensive security, network and protocol analysis, and the assessment of connected and industrial systems.

I enjoy understanding how systems work beneath the surface, identifying where security assumptions can fail, and documenting findings in a way that is useful to both technical and non-technical teams.

What I work on

  • Security testing and vulnerability assessment
  • Network traffic and protocol analysis
  • Active Directory and Windows Security
  • Web application security
  • OT/ICS and connected-device security
  • Python-based analysis and security automation
  • Technical research and security documentation

Current experience

I currently work in cybersecurity research involving smart-grid technologies and connected energy devices.

My work includes analyzing device communication, authentication mechanisms, firmware and update processes, web interfaces, and proprietary or standardized protocols. This experience has strengthened my ability to investigate unfamiliar systems, design practical security tests, analyze network behavior, and communicate technical findings clearly.

Background

  • B.Sc. in Computer Science from THU (Technische Hochschule Ulm)
  • Professional experience in cybersecurity research, offensive security, network analysis, and connected systems.
  • Academic focus on information security, penetration testing, digital forensics, and information security management.
  • Background in journalism and investigative media work, strengthening my approach to research, source verification, evidence analysis, and clear technical communication

Selected Projects

A documented Active Directory security assessment covering discovery, credential access, lateral movement, domain compromise, Golden Ticket abuse, AD CS misconfigurations, Kerberos delegation, and Sliver C2.

The project connects exploitation evidence with attack-path reasoning, security impact, detection opportunities, and mitigation.

Structured web application security assessments covering OAuth authorization flows, HTTP Host header trust, password-reset poisoning, and file-upload validation.

The reports focus on testing methodology, vulnerable behaviour, evidence, root cause, impact, and remediation.

Selected penetration-testing and digital-forensics write-ups covering web authorization weaknesses, packet analysis, credential exposure, Linux privilege escalation, file carving, and archive recovery.

A Python command-line tool that checks cybersecurity Markdown repositories for publication risks and documentation-quality problems.

It detects exposed authentication material, lab flags, sensitive file types, broken relative links, unclear evidence descriptions, oversized command output, missing scope documentation, and contradictory validation statements. The project includes configurable rules, structured output, automated tests, and GitHub Actions CI.

Connect

LinkedIn

Pinned Loading

  1. goad-ad-lab goad-ad-lab Public

    A documented GOAD Active Directory assessment covering enumeration, credential access, domain compromise, Golden Tickets, AD CS, delegation, and Sliver C2.

  2. web-security-labs web-security-labs Public

    Structured web application security assessments covering OAuth, Host header attacks, password-reset poisoning, and file-upload vulnerabilities.

  3. security-lab-writeups security-lab-writeups Public

    Selected security lab write-ups covering penetration testing, Linux privilege escalation, packet analysis, and digital forensics.

  4. secdoclint secdoclint Public

    A publication-safety and consistency linter for cybersecurity Markdown repositories.

    Python