Some of the things he found would allow a malicious person to do some real damage, that part is terrifying. But it's also really funny, so I'll go with that.
Weeeeell, if somebody turned of the cooling of a warehouse full of shrimp, that would be kind of funny (except for the poor people who live downwind and have to cope with the smell...).
If somebody turned off the backup power supply of a hospital, that would be slightly less funny.
(Full disclosure: I am a native German speaker, so the concept of Schadenfreude is quite familiar... even though I try to refrain from enjoying others' misfortunes, unless they were really, really asking for it, for example by hooking up their shrimp warehouse's climate system to the Internet without even password protection...)