I realize it is quick to be against Fizz, but I thought ethical hacking required prior permission. Am I to understand you can attempt to hack any computer to gain unauthorized access without prior approval? That doesn't seem legal at all. Whether or not there was a vulnerability, was the action taken actually legal under current law? I don't see anything indicating for or against in the article. Just posturing that "…
(a) There's no such thing as "ethical hacking" (that's an Orwellian term designed to imply that testing conducted in ways unfavorable to vendors is "unethical"). (b) You don't require permission to test software running on hardware you control (absent some contract that says otherwise). (c) But you're right, in this case, the researchers presumably did need permission to conduct this kind of testing lawfully.
Weird stance. Sure, you may disagree on the limitations of scope of various ethical hacking programs (bug bounties and such) but they consistently highlight some very serious flaws in all kinds of hardware and software.
Going out of scope (hacking a company with no program in place) is always a gamble and you’re betting on the leniency of the target. Probably not worth it unless you like to live dangerously.