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Usynlig Fjende Book Release

Written by CSIS | Feb 25, 2026 11:25:33 AM
We are proud to announce that our colleague Jan Kaastrup has published the book "Usynlig fjende" together with Michael Sjøberg and Ida Nyegård Espersen. Together, the authors take readers behind the scenes of real cases, cyberattacks, and their very real consequences -offering rare insight into the inner workings of the IT-criminal underworld.

Written for a broad audience beyond technical specialists, "Usynlig fjende" makes complex threats accessible and sheds light on the hybrid risks shaping today’s security landscape.

Learn more about the book