> Pick one
I don’t understand. Industrial sabotage is an act of vandalism with the intended purpose of causing disruption in productivity. This incident in particular only caused a relatively minor disruption not much bigger then e.g. a partial github outage.
> I don't see how this is different.
The difference is in 1) the intended targets. This incident was targeted against particular industry. The worm you are describing would be indiscriminate and would have the potential to be 2) much larger scale and therefor you could deduce the 3) intention of your hypothetical attacker would not be to cause disruptions of productivity withing a particular industry, but rather to prank random strangers. The difference is rather obvious.