For security it does have that metal ring thinghy, visible on the cable with the plug, which a bike cable lock or something can be run through.
At most CGs I don't worry much. Think of all the stuff we leave outside anyhow. how about tenters? Everything they own is there for the taking. I did engrave the case of mine with a soldering iron. No removing that mark. At most CGs there are almost always eyes looking.