Unfortunately I think you are going to see a lot more of this kind of thing in the future

I'm referring to the previous article about a hacker setting off 156 emergency sirens that likely would be notifying Dallas Residents of incoming Tornadoes or Hurricanes which is why listening to this would terrify local Dallas residents until they called their local weather stations or looked up the weather patterns on a radar on their computers.

Unfortunately I think you are going to see a lot more of this kind of thing in the future
Where people take control of traffic signals, emergency sirens, Self Driving cars, Power grids etc.

If you know anything about programming software at all you know that there are no computer programs that are not vulnerable to hacking. The only exception to this is when programs are printed directly on a chip and hardwired in. But, even then ways can be designed to cause problems in oblique ways even if the program is hard wired and not just memory resident in a more temporary way the way most programs like Operating systems are on most computers worldwide.

So, because of this hackers can often modify operating systems to do more what they want like sending them any new information coming onto or across the perusal of the CPU specific computer or all computers on a specific network.

So, there are literally almost an infinite amount of ways that many programs could be hacked where no one would ever know they were hacked including banking programs worldwide.

But, here's the thing. Most of the people crazy enough to do something like this aren't 18 yet, and the rest are hardened criminals who usually started to do things like this when they were 10 and now are 35, 50 or whatever age now.

So, there is what is possible to do and then you have to look for people crazy enough to do that hacking worldwide.

And this is often easy too. All you have to do is look for the countries where people can and will never be prosecuted for computer crimes outside of that country.
IN other words:

Russia,
China,
Ukraine
and maybe 3/4 of the countries on earth where people will never be brought to justice or be extradited to the U.S. or Europe or most other places.

This is one of the reasons why I think there should be a firewall so those hackers cannot hack into the U.S. Europe or other countries. This might happen eventually but I doubt it.

So, what I'm saying here is 1 hacker with the right equipment (who may or may not be a part of the Russian Government) might hack into the U.S. power grid and blow up equipment by running too much power down various lines.

This then could also shut down one or more grids for days, weeks or months depending upon how quickly the equipment destroyed is available to be replaced. (some equipment might take 6 months to build new units for example.

So, in a case like this it might mean now grid power in one area for months which could be a complete disaster in an over 100 degree heat session of multiple days or temperatures during blizzards or extreme cold in the north East or the northern part anywhere east or west of our nation.

And that one person who did this might never be prosecuted ever no matter how many people died (accidentally) from something like this because they are in a foreign country.

But, here's the thing. If your relative died from something like this and you were rich enough you might hire a private investigator who was a mercenary and find that person anywhere on earth and make that person disappear in any country on earth.

So, when you (accidentally injure or kill people) someone might come and take you out either from something like the CIA or a private citizen who can afford to finance something like this from anywhere on earth.

So, people who harm other people need to understand that it is quite possible that someone will be coming after you and you will disappear eventually if you kill or harm people in other countries.

That's why people who do stuff like this in the U.S. are usually between 10 and 15 years of age before they realize that what they are doing might make them disappear. And often people that age (if no one dies) will be temporarily or permanently forgiven and at some point just wind up being consultants for the government anyway eventually.