About

Binary Security

Binary Security was founded in January 2019. Our goal is to offer high-quality cyber security services. Through an analytical approach to security engineering and security testing, we utilize our experience to solve difficult security problems inherent in today's technologies and uncover bugs that others do not find.

The team

Christian Hansen Christian August Holm Hansen is a security specialist and co-founder of Binary Security. He holds a MSc. in Communication Technology from NTNU, with an exchange programme at EURECOM, with a specialization in information security. He has many years of experience as a security consultant, having performed hundreds of technical security assessments with a mix of mobile applications, web applications, IoT devices and networks. Christian is an Offensive Security Certified Professional and excels at finding bugs and breaking into networks. When time allows, he enjoys finding bugs in much used software and has been acknowledged by Microsoft and Google for finding vulnerabilities in Microsoft Azure and Google Cloud Platform. He has previously been among the top five yearly "bughunters" in the Google VRP. In 2019 he co-founded Binary Security after leaving the penetration testing team of a major scandinavian financial institution.


Christian Håland Christian Håland is a security specialist and the other co-founder of Binary Security. He holds a MSc. in Computer Science from NTNU with a specialization in security. He spent a year at UC Santa Barbara taking courses in Information Security taught by Giovanni Vigna and Richard Kemmerer at the UCSB Seclab. He has many years of experience as a security consultant and in-house application security engineer at Unity Technologies. Christian is an Offensive Security Certified Professional and enjoys finding cool bugs, building security tools and researching topics within application security.


Torjus Bryne Retterstøl Torjus Bryne Retterstøl is a security specialist and partner of Binary Security. He joined Binary Security in 2021, and has previously worked with technical information security since 2015. He has experience from companies in both the public and the private sector, doing penetration testing, research and development and security consulting. He holds a MSc. in Communication Technology from NTNU, with an exchange programme at EURECOM, with a specialization in information security. Torjus have the certifications Offensive Security Certified Professional (OSCP), Offensive Security Certified Web Expert (OSWE) and Certified Information Systems Security Professional (CISSP).