While jamming is today for everybody ( jammers for sale as low as 150 USD on internet ) spoofing is more complex and far more expensive and normally done by a State ,e.g. the Russian military. You find it today commonly around military exercises and conflict areas. e.g. Syria, Libya , Baltic. Black sea .etc.. Brings back the old question of what civilian commercial traffic is doing flying close or over those areas but this is another subject.