Spatio-temporal exposure control. - Geir M. Køien; Vladimir A. Oleshchuk (PIMRC, 2003)

Security aspects of 3G-WLAN interworking. - Geir M. Køien; Thomas Haslestad (IEEE Commun. Mag., 2003)

An introduction to access security in UMTS. - Geir M. Køien (IEEE Wirel. Commun., 2004)

Access security in CDMA2000, including a comparison with UMTS access security. - Greg Rose; Geir M. Køien (IEEE Wirel. Commun., 2004)

Location Privacy for Cellular Systems; Analysis and Solution. - Geir M. Køien; Vladimir A. Oleshchuk (Privacy Enhancing Technologies, 2005)

Privacy enhanced cellular access security. - Geir M. Køien (Workshop on Wireless Security, 2005)

Privacy Enhanced Mobile Authentication. - Geir M. Køien (Wirel. Pers. Commun., 2007)

Mutual entity authentication for LTE. - Geir M. Køien (IWCMC, 2011)

Privacy Enhanced Device Access. - Geir M. Køien (MobiSec, 2011)

Reflections on Trust in Devices: An Informal Survey of Human Trust in an Internet-of-Things Context. - Geir M. Køien (Wirel. Pers. Commun., 2011)

Location-Aware Mobile Intrusion Detection with Enhanced Privacy in a 5G Context. - Nils Ulltveit-Moe; Vladimir A. Oleshchuk; Geir M. Køien (Wirel. Pers. Commun., 2011)

Mobility and Spatio-Temporal Exposure Control Exposure Control as a Primary Security and Privacy Tool Regarding Mobility, Roaming Privacy and Home Control. - Geir M. Køien (J. Cyber Secur. Mobil., 2012)

GPRS Security for Smart Meters. - Martin Gilje Jaatun; Inger Anne Tøndel; Geir M. Køien (CD-ARES, 2013)

Addressing the Terms-of-Service Threat - Client-side Security and Policy Control for Free File Storage Services. - Geir M. Køien; Vladimir A. Oleshchuk (CLOSER, 2013)

Privacy handling for critical information infrastructures. - Nils Ulltveit-Moe; Terje Gjøsæter; Sigurd M. Assev; Geir M. Køien; Vladimir A. Oleshchuk (INDIN, 2013)

Privacy enhanced mutual authentication in LTE. - Geir M. Køien (WiMob, 2013)

Security and privacy in the Internet of Things: Current status and open issues. - Mohamed Abomhara; Geir M. Køien (PRISMS, 2014)

A "Best Current Practice" for 3GPP-based cellular system security. - Geir M. Køien (VITAE, 2014)

Cyber Security and the Internet of Things: Vulnerabilities, Threats, Intruders and Attacks. - Mohamed Abomhara; Geir M. Køien (J. Cyber Secur. Mobil., 2015)

Towards an Access Control Model for Collaborative Healthcare Systems. - Mohamed Abomhara; Geir M. Køien (HEALTHINF, 2016)

Access Control Model for Cooperative Healthcare Environments: Modeling and Verification. - Mohamed Abomhara; Huihui Yang; Geir M. Køien (ICHI, 2016)

A privacy enhanced device access protocol for an IoT context. - Geir M. Køien (Secur. Commun. Networks, 2016)

Work-Based Access Control Model for Cooperative Healthcare Environments: Formal Specification and Verification. - Mohamed Abomhara; Huihui Yang; Geir M. Køien; Mehdi Ben Lazreg (J. Heal. Informatics Res., 2017)

Sharing With Care - Multidisciplinary Teams and Secure Access to Electronic Health Records. - Mohamed Abomhara; Berglind Smaradottir; Geir M. Køien; Martin Gerdes (HEALTHINF, 2018)

Towards Risk-aware Access Control Framework for Healthcare Information Sharing. - Mohamed Abomhara; Geir M. Køien; Vladimir A. Oleshchuk; Mohamed Hamid (ICISSP, 2018)

Trust management in tactical coalition software defined networks. - Anders Fongen; Geir M. Køien (ICMCIS, 2018)

Why Cryptosystems Fail Revisited. - Geir M. Køien (Wirel. Pers. Commun., 2019)

A Philosophy of Security Architecture Design. - Geir M. Køien (Wirel. Pers. Commun., 2020)

Initial Reflections on the Use of Augmented Cognition in Derailing the Kill Chain. - Geir M. Køien (HCI (15), 2021)

A Threat Analysis of Human Bond Communications. - Geir M. Køien (Wirel. Pers. Commun., 2021)

On Threats to the 5G Service Based Architecture. - Geir M. Køien (Wirel. Pers. Commun., 2021)

Zero-Trust Principles for Legacy Components. - Geir M. Køien (Wirel. Pers. Commun., 2021)

The Road to a Trustworthy 6G; On the Need for a "Zero Trust 6G" Paradigm. - Geir M. Køien (J. Mobile Multimedia, 2024)

Validating Reliability and Security Requirements in Public Sector Infrastructure Built by Small Companies. - Roar E. Georgsen; Geir M. Køien (J. ICT Stand., 2025)

A Call for Mandatory Input Validation and Fuzz Testing. - Geir M. Køien; Lasse Øverlier (Wirel. Pers. Commun., 2025)