February 17, 2020, 4 o'clock in the morning, the Danish facility firm ISS was hit by a ransomware attack. An attack that has changed the company ever since. In this case story you will get to meet two significant people from the ISS Group, Nikolaj Storm Lund, responsible for IT infrastructure and Services globally together with Martin Petersen, responsible for all IT security at the ISS Group. They experienced the attack firsthand and was part of the team who managed and recovered from it back in 2020.