Nuclear facilities worldwide should be setup with small patches of foreign owned land, such that attacking said facility would be an act of war on a swath of countries. They should be excluded from any power struggle, war, union action, everything, just a big no territory under any circumstance, or the whole world gets a free pass instantly to retaliate.

"Will they adhere to an honor system of curtailing their power use" They would be on a contract that provides cheaper power and enables the power company to cut power when required, no honor system necessary (that's what contracts are for). For those wiling to pay full price to avoid the conditions, well after the grid computing (whatever) plan is created disallow it on main plans. If a house is using 100x expected power investigate. Report it to police as a suspiciously high power usage and they'll go there looking for a grow house ;)

Please stop saying "Australia" did these things, it's our batshit politicians not the people.

How about a surface that reflects or deflects the laser?

And Lenovo makes cheap consumer pcs. Iomega zips were hard as rocks, I respect that brand more than Lenovo.

Windows users can easily be crashed using this still, but I don't know if it can be used to execute code etc.

We get this a lot, there's many images out there that'll make quicktime crash. We have an image board for showing things we're talking about, when we hit a "bad" image all the windows users disappear (crash) at the same time. A responsible Linux or Mac user then removes the image so they can return ;)