Lennart Maschmeyer is a senior researcher in cybersecurity at the Center for Security Studies at ETH Zurich. He holds a PhD from the University of Toronto. Lennart’s research examines the subversive nature of cyber power, focusing on its operational challenges and strategic limitations. In particular, he has studied the use of cyber operations in the Russo-Ukrainian war since 2014. As part of this research, Lennart also investigates the effectiveness of social media disinformation as a subversive instrument.