[LatteLazy]

Is it common?

There has been a very long time exception for murder, rape and piracy (with boats not file sharing). Recently terrorism has been added to that.

But as far as I'm aware the US is the only major country that tries to enforce its laws on people not there. Who else has been trying this?

Edit

Wikipedia lists some

https://en.wikipedia.org/wiki/Extraterritorial_jurisdiction

Looks like some places have added planes from/to/through their airspace, sex crimes against minors and space craft to the list of extraterritorial coverage. No one else is doing espionage, computer crimes, fraud, etc like the USA...