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Let's Encrypt Announces New-Certificate-Every-6-Days Offering (letsencrypt.org)

submitted 6 days ago by [email protected] to c/[email protected]

108 comments fedilink hide all child comments

via https://it.slashdot.org/story/24/12/15/0059216/lets-encrypt-announces-new-certificate-every-6-days-offering

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[–] [email protected] 24 points 5 days ago (3 children)

If they get it without your knowledge, what are the odds they can get the new one too?

If they got it with your knowledge, can't you just revoke the old one?

[–] [email protected] 11 points 5 days ago

If they got it with your knowledge, can’t you just revoke the old one?

Yeah, but unfortunately cert revocation isn't that great in practice. Lots of devices and services don't even check the revocation lists on every connection.

[–] [email protected] 9 points 5 days ago (1 children)

https://en.m.wikipedia.org/wiki/Swiss_cheese_model

[–] [email protected] 7 points 5 days ago (1 children)

I've been using the Swiss Cheese Model for my sandwiches and they've been a disaster.

[–] [email protected] 3 points 4 days ago

You have to scramble the slices, otherwise the holes all line up and your mayonnaise falls out.

[–] [email protected] 3 points 5 days ago (1 children)

6 days to do what you want to do to the page and its visitors. I guess that's good?

[–] [email protected] 1 points 5 days ago

It would be six days at max, assuming they managed to steal the certificate immediately after it was issued, otherwise it's gonna be even less.

Having the certificate doesn't automatically mean you can change the site, if you have control of the site hosting you likely wouldn't need to steal the cert anyway.

Stealing the certificate would allow you to run a man in the middle type attack but that's inevitably going to be very limited in scope. The shorter time limit on the cert reduces that scope even further, which is great.

Since most Let's Encrypt certs will have an automated renewal process this doesn't even really change the overhead of setup so I think this move makes a lot of sense.

There are other things certificates can be used for as well of course but I'm just going off your example.