1 Puch Austro Daimler - Stolen, perp lifted entire bike rack it was chained to into a truck.
1 Tomos Silver Bullet - Missing, was in shop for repairs, owner got busted for running a chop shop, 'ped not found.
1 Tomos Golden Bullet - Stolen, perp bypassed expensive alarm system and heavy chain
1 Tomos Trike - Ripped in half AND set on fire, someone used a truck to try to pull it, because the chain was too heavy to cut, and attached to a 8' metal stake buried in the ground and anchored with concrete down there - their attempt to pull it tore the front end off, and they set it on fire.
Your 'ped is only as safe as you make it, mine is outside my window with motion lights, and an alarm rigged to them, and about 25 feet of very heavy chain wound through the metal railing of the porch, which is set into the concrete, and I am a light sleeper, with a shotgun under the bed.
Your best bets as far as it goes, I can only suggest.
At your home, go full-paranoia, if you wish to keep your vehicle, those motion activated lights are nice, mount them right over where you chain it up, and rig a motion-activated alarm system up as well, some very heavy chain and lots of it is also a plus.
When parking your bike somewhere else, never EVER chain it to a bike rack that is not anchored in concrete, see above for why.
I pick a highly visible spot, preferably somewhere I can see the damn thing even in the store, and if that sometimes means parking it on the sidewalk out in front of their windows - that's what it means, they can bitch all they like, they ain't the ones gonna be buyin me a new 'ped when someone walks off with or trashes mine.
As for hit-and-run simple vandalism, it's prettymuch a fact of life for 'ped owners, all you can do about that is cultivate a certain 'reputation' in your local area, by hospitalizing anyone you catch, and even that isn't a fullproof deterrent.
(Nobody in this little town here will TOUCH my 'ped, and I like it that way.)
Best of luck, guy.