Astonishingly, the private keys were 4, 56, 66, 115, 155, 156, 230, 237.
exploiting compromised certificates requires an active adversary-in-the-middle attack, meaning the attacker must act as a proxy between two TLS parties and receive encrypted traffic, decrypt it, reencrypt it, and send it to the other party. Such capabilities, in some cases, are usually limited to only the most well-resourced attackers. People with control of a local network—at a coffee shop, university, or other organization—face much less of a challenge.
https://emudhra.we-have-a-problem.com/



Basically they learned that if they told the vendors and kept their mouth shut, many vendors won’t do shit and will just ignore the problem. Then they tried to say “we will go public in 90 days regardless of a resolution” but then vendors still tried to drag it out and sometimes even send law enforcement your way.
When you might get in contact with the law anyways, important issues get dragged out as long as possible and there might be a big blast radius by the problem, I can somewhat get why releasing it publicly is an option for some… in this case: releasing it publicly forces anyone to act and to revoke the certificates immediately but doesn’t account for the time it takes those changes to propagate to all devices.
What’s worse is that half the time people actively tried to tell vendors they got hit with a lawsuit in return. It usually doesn’t stick, but the sheer fact that you have to defend yourself in court cause you tried to help is nuts.