Bug bounty hunter

Bug bounty hunter

bug bounty hunter

Role of the bug bounty hunter

Bug Bounty Hunters, also known as cybersecurity bounty hunters, are computer security experts who specialise in detecting vulnerabilities in computer systems, software or web applications. Their aim is to find vulnerabilities before they are exploited by cybercriminals.

Often freelance or self-employed, Bug Bounty Hunters use advanced techniques such as penetration testing, source code analysis and reverse engineering to identify weak points in systems. In exchange for their discoveries, they receive financial rewards in proportion to the seriousness of the vulnerabilities reported.

This profession belongs to the field of IT testing.

The missions of the Bug Bounty Hunter :

  • They identify vulnerabilities in computer systems, software and web applications, using advanced techniques (penetration tests, code analysis).
  • They write reports on the vulnerabilities discovered.
  • They work with the security and development teams to validate their findings and ensure that patches are implemented.
  • They take part in Bug Bounty programmes. This is an initiative set up to identify and report vulnerabilities or security flaws in their systems, applications or websites in exchange for financial rewards.
  • It proposes technical solutions to remedy vulnerabilities, actively contributing to improving the overall security of systems.

Key contacts

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Bug bounty hunter skills

Technical skills

  • Mastery of the fundamentals of cybersecurity and network security, cryptography (SSL, TLS, SSH protocols) and common vulnerabilities.
  • Expertise in Python, JavaScript, Ruby, Java and C++ programming languages.
  • Familiarity with Windows, Linux and macOS operating systems, as well as cloud environments.
  • Experience with Burp Suite (for web application analysis), Metasploit (for penetration testing ), and Nmap (for port scanning and network discovery).
  • Expertise in communication protocols (HTTP, DNS, FTP, etc.) and network security to identify weaknesses in infrastructures.
  • Ability to assess application architectures and detect vulnerabilities such as SQL and XSS injections.

Soft skills

The bug bounty hunter needs to have a hacker's mindset, combining curiosity and creativity to analyse how systems work and discover vulnerabilities. Patient and persevering, they are capable of spending hours, even days, analysing environments with no immediate guarantee of success, but with the ability to handle pressure and stay motivated.

With excellent analytical and problem-solving skills, they propose solutions to correct vulnerabilities. They are comfortable with written and oral communication, writing reports and working with development and security teams. Autonomous and organised, they know how to manage their time and priorities.

Finally, to ensure that any vulnerabilities discovered are disclosed and that confidentiality rules are respected, you will demonstrate impeccable ethical standards.

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Education and training

This profession requires 2 to 5 years' higher education, with a background in IT and cybersecurity. Some candidates manage to succeed without a degree, thanks to their practical experience and self-taught skills.

Among the specialist schools, Guardia Cybersecurity School offers courses such as the Bachelor's degree in IT Development with Cybersecurity option and the MSc Cybersecurity Expert, which combine theory and practice. IMERIR (Perpignan) offers courses ranging from bac +2 to bac +5, with diplomas awarded by the Conservatoire National des Arts et Métiers (CNAM).

To complete their training, bug bounty hunters can obtain recognised certifications attesting to their expertise in penetration testing, web application security and vulnerability research.

  • Certified Ethical Hacker (CEH)
  • Offensive Security Certified Professional (OSCP)
  • Web Application Hacker's Handbook (WAHH)

Possible developments

With experience, the bug bounty hunter can have various opportunities :

  • Information Systems Security Manager (ISSM)
  • Head of Red Team
  • Cybersecurity consultant