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Cake day: July 11th, 2023

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  • Actually the problem is that they are too widespread. if something happened, and they started creating fake certificates, for outside force or otherwise, they can’t just be blocked because literally half of the internet or more breaks. what’s worse, if browser vendors trued that, people would be downgrading their browser to the last version accepting it, and become exposed to publicly revealed security vulnerabilities. not all because its a bit complicated, but enough would do to have it cause an even greater problem.




  • which is still there if you are not using lets encrypt, because they can strongarm them to make a fake cert for your domain, and install a proxy repackaging HTTPS traffic with the fake certificate. all browsers trust the lets encrypt root certificate, so they won’t see anything suspicious.

    the only thing there today to detect this (but not avoid) is certificate transparency logs. all modern certificates are required to be added to this log, for the CA to remain compliant. but browsers are not checking the logs, that would be a lot of additional traffic and how do they decide if a certificate was created maliciously? also, lets encrypt could afford being noncompliant, browser vendors can’t realistically just distrust their root certificate, many sites would become inaccessible.



  • Nobody is credibly suggesting that everyone should switch to IPv6 without a firewall.

    OP writes:

    many ISPs and institutional networks keep doing NATy stuff out of inertia and even more misguided security thinking: firewalls that refuse inbound

    Every single domestic router for the past two decades has included a firewall, and that would not change in an all IPv6 world.

    my ISP router does not have firewall settings, despite supporting IPv6. it has a DMZ setting, able to forward all incoming traffic to a specific internal IP, and that’s it. I have a similar experience with cheap consumer routers too.