You can find secure parking for your bike in Cambodia. Depending of the price class of your hotel they will either drag the bike into the motel or they will have a parking place where somebody sleeps during the night. Anyhow I don't think anybody is interested in your Ducati. They prefer more reliable Daelims and such....
I go to Cambodia, often 3x/year and agree with HIKO.
However, last December my bike was stolen from the lobby of the hotel I stayed at...by a local drug crazed Brit. I'd not stayed at that hotel previously.
I recovered the bike [lucky!] but now, unlike the past , I also lock the bike overnight when staying at a place I'm not familiar with.