
But ... why?
Apparently not ransomware or foreign spying. Workplace grudge? Or just 14 yr old minds stuck in the bodies of adults having a bit of adolescent fun? Thank god they didn't have a way to remotely pull the rods.
Spain's national police say they have arrested two former government workers suspected of breaking into the computer network of the country's radioactivity alert system (RAR) and disabling more than a third of its sensors. The intrusion happened between March and June 2021, and the two suspects worked for a company contracted …
It does, if used properly. The default stance isn't to immediately assume that someone is lying just because they could personally gain from doing so, or even just because they can for no good reason.
Occam's Razor isn't a law, rather it's a philosophical tool. It suggests that the hypothesis with the least number of assumptions is most likely to be true. Gaining evidence reduces the number of assumptions needed for a hypothesis, thus affecting how likely it is to be true compared to other hypotheses.
You missed out the most important part i.e. "all things being equal".
People are not equal and can lie for no reason therefore they cannot be considered to be simple especially if they are aware Occums will be applied.
If things were otherwise then there would be no need to investigate crimes, since the most obvious suspect need only to be asked and they would confess.
Rather than Occam, a better razor to use here is Hanlon's:
"never attribute to malice that which is adequately explained by stupidity."
Maybe they were shit at their job, accidentally deleted the control app, and they were actually trying to log into the sensors to fix them before their boss noticed, but fucked it up even worse?
Why were these sensors accessible through the internet? A popular place of hospitality sounds suspiciously like Starbucks or a local equivalent. Why wouldn't these sensors be broadcast only with modifications only via physical access? Yeah, I get it. It's so much easier to push out changes to all of them at once, but this is the sort of thing where you'd think they would have worked it all out before the devices were deployed. It's also something that should be very simple to begin with.