I am hoping to have an IT expert speak at the 2020 EBME Expo on cyber security for medical equipment.

I agree, why would anyone do such a thing as hack into medical equipment?
Just for fun;
To get the NHS to pay a ransom...(been done before);
To harm or kill someone (potentially an ex-russian spy? perhaps being treated in an NHS hospital for nerve agent poisoning??)
Who knows, but the security of a piece of medical equipment should be equivalent to other industry sectors (Aircraft, motor vehicles...), and it is not there yet. shocked

Be Proactive and reactive.