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Attacker models are the cornerstone of any security assessment. As attacker's capabilities evolve over time, it is key to re-evaluate periodically if attacker models that were deemed unrealistic in the past might not pose a possible threat today. In this work, we evaluate the threat of wireless radio signal cancellation attacks in the face of recent advancements in software-defined radio attacker capabilities. Unlike classical radio interference or jamming attacker models which add noise to the legitimate communication, signal cancellation attacks aim at interfering destructively with the legitimate signal in order to remove those signals from the spectrum. While signal cancellation attacks were deemed unrealistic in the analogue domain, we analyse the system requirements to perform such attacks digitally using SDRs and evaluate the feasibility to launch such attacks against wireless communication systems such as GPS …