Sergen Koç

Sergen Koç

Almelo, Overijssel, Netherlands
5K followers 500+ connections

About

Ethisch hacker, Artificial Intelligence deskundige en Cybersecurity expert; Pianist en…

Experience

  • Ahold Delhaize Graphic

    Ahold Delhaize

    Zaandam, Noord-Holland, Nederland

  • -

    Almelo, Overijssel, Nederland

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    Apeldoorn, Gelderland, Nederland

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    Utrecht, Nederland

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    Enschede, Overijssel, Nederland

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    Enschede, Overijssel, Nederland

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    Dedemsvaart, Overijssel, Nederland

Education

Licenses & Certifications

Projects

  • Chronos

    -

Honors & Awards

  • Hall of Fame - Informatiebeveiligingsdienst

    Gemeente Almelo

    https://www.informatiebeveiligingsdienst.nl/responsible-disclosure/2022-coordinated-vulnerability-disclosure-hall-of-fame

  • Hall of Fame - Dutch National Police

    Politie Nederland

    https://www.politie.nl/algemeen/responsible-disclosure-hall-of-fame.html

  • Letter of Appreciation - RIVM

    Dutch National Institute for Public Health and the Environment (RIVM)

    Found 8 vulnerabilities in the systems of governmental body, the Dutch National Institute for Public Health and the Environment (RIVM)

  • Hall of Fame - Nokia

    Nokia.com

    https://www.nokia.com/responsible-disclosure

    In the Hall of Fame of Nokia for finding a remote code execution vulnerability in one of their mission critical systems. Non-Disclosure Agreement signed to not share any details.

  • Hall of Fame - KPN

    KPN

    Admitted to the Hall of Fame of KPN four times in 2019, 2020, 2021 and 2022.
    https://www.kpn.com/kpn-cert-en/hall-of-fame-en.htm

    Found a vulnerability where I could access restricted areas to see, edit and delete current projects, budgets, stakeholders. I also found passwords of other services such as Kadaster and could see blueprints and detailed maps of how buildings look and where underground internet cables are put. I could see for example governmental/police buildings prints…

    Admitted to the Hall of Fame of KPN four times in 2019, 2020, 2021 and 2022.
    https://www.kpn.com/kpn-cert-en/hall-of-fame-en.htm

    Found a vulnerability where I could access restricted areas to see, edit and delete current projects, budgets, stakeholders. I also found passwords of other services such as Kadaster and could see blueprints and detailed maps of how buildings look and where underground internet cables are put. I could see for example governmental/police buildings prints and maps.

  • Hall of Fame Volker Wessels

    Volker Wessels

    https://www.volkerwessels.com/nl/responsible_disclosure/hall_of_fame

  • Hall of Fame OV-Chipkaart

    Translink

    https://www.ov-chipkaart.nl/service-and-contact/responsible-disclosure-policy/responsible-disclosure-hall-of-fame.htm

    In the Hall of Fame for finding a vulnerability where I could hijack sessions of OV-chip business card applicants and let the card be sent to another address (e.g. my home address), giving the hijacker the opportunity to travel for free until the real applicant of the card discovers he/she/it hasn't received his card. Also could change the subscription making it cheaper…

    https://www.ov-chipkaart.nl/service-and-contact/responsible-disclosure-policy/responsible-disclosure-hall-of-fame.htm

    In the Hall of Fame for finding a vulnerability where I could hijack sessions of OV-chip business card applicants and let the card be sent to another address (e.g. my home address), giving the hijacker the opportunity to travel for free until the real applicant of the card discovers he/she/it hasn't received his card. Also could change the subscription making it cheaper or more expensive for the business at the same time.

  • Hall of Fame Tesla

    Tesla

    https://bugcrowd.com/tesla/hall-of-fame

    Found a misconfiguration on 4 servers of Tesla which allowed me to view/read business-related sensitive files.

Languages

  • Chinese

    Full professional proficiency

  • Turkish

    Professional working proficiency

  • Dutch

    Native or bilingual proficiency

  • English

    Native or bilingual proficiency

  • Hebrew

    Limited working proficiency

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