Technical Lead OT - Detection Services

Nicklas Keijser

Nicklas Keijser is one of Sweden’s most experienced cybersecurity experts, with deep expertise in OT security, incident investigations, and advanced cyberattacks. He began his career programming industrial control systems, which has given him a strong technical foundation and a practical understanding of how cyberattacks impact physical processes and critical infrastructure. Prior to joining Truesec, he worked at CERT‑SE, focusing on incident response related to critical infrastructure.

Nicklas also has extensive experience in malware analysis and has conducted over 100 incident investigations. This experience has given him unique insight into how attacks are carried out in practice, as well as how organizations can best build effective defenses and protect themselves against advanced threats, particularly in OT environments.

Today, Nicklas works at Truesec as Technical Lead OT within Detection Services, where he drives the technical development of monitoring and detection capabilities for OT environments. He is also a frequently invited speaker and expert commentator, sharing practical insights and real‑world experience on the current cyber threat landscape.