More seriously, we need to get out from under WebPKI, which allows *any* one compromised CA to compromise *all* TLS traffic.
What is to be done? DANE is to be done.
Secure DNS for authorization is the obvious answer. It is a "fix everything button". People were proposing the concept as far back as 1996, in vain, because the web went in a different and riskier direction.
Yada yada yada, "you trust the TLD authorities with DANE", WebPKI defenders yap. I don't want to hear it. Just stop.
My brother in malware, WebPKI lets any bleach-drinking "derp my secret key is 4" CA break the internet, yet you're sitting there, presumably huffing the fumes yourself, opining as a serious person that we can't have browsers use DANE to authenticate connections because the DNS roots might be evil one day?
Meanwhile, because WebPKI has functionally become Let's Encrypt, and LE will give me a certificate if I demonstrate domain control, WebPKI has exactly the same vulnerability a DANE world would, but without any of the safeguards or benefits.
"Oh, but in WebPKI we can eject the bad actors". Yeah? Well, in DANE, I don't have to care, because the
wtf.lol TLD doing something stupid can't hurt me.
"We can just push a revocation!" Okay, and we're supposed to rely on a tiny handful of CRL aggregators to do that? And reach all the people embedding random CA bundles in long-lived systems? No, the security of the internet shouldn't rely on some guy's pager going off, especially not when the people who run these things have convinced us all that CRLs and OCSP are somehow bad and that only they, collectively, are allowed to publish global lists of who's been cryptographically naughty or nice?
No: name constraints, CA/B tut-tutting, and CAA aren't the answer. DANE is, always has been, and always will be because having two partly overlapping principal languages and a false separation of concerns is a ridiculous footgun for the internet.
One secret key was the number four. The whole key. Four. 0b100.
And why does "Comodo" so often pop up like this? Perhaps, after they go under, some charity can buy the trademark and donate it to the public as a byword for clowniness that rises to danger to the public.