this post was submitted on 02 Dec 2025
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Let’s Encrypt will be reducing the validity period of the certificates we issue. We currently issue certificates valid for 90 days, which will be cut in half to 45 days by 2028.
This change is being made along with the rest of the industry, as required by the CA/Browser Forum Baseline Requirements, which set the technical requirements that we must follow. All publicly-trusted Certificate Authorities like Let’s Encrypt will be making similar changes. Reducing how long certificates are valid for helps improve the security of the internet, by limiting the scope of compromise, and making certificate revocation technologies more efficient.

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[–] cupcakezealot@piefed.blahaj.zone 7 points 1 day ago (2 children)

assuming "rest of the industry" in this context refers to ssl seller lobby.

[–] dan@upvote.au 14 points 1 day ago* (last edited 1 day ago) (1 children)

Yes, this requirement comes from the CA/Browser Forum, which is a group consisting of all the major certificate authorities (like DigiCert, Comodo/Sectigo, Let's Encrypt, GlobalSign, etc) plus all the major browser vendors (Mozilla, Google, and Apple). Changes go through a voting process.

Google originally proposed 90 day validity, but Apple later proposed 47 days and they agreed to move forward with that proposal.

[–] fluckx@lemmy.world 3 points 23 hours ago* (last edited 23 hours ago) (2 children)

Don't worry they'll reduce the cost of certificates proportionally to the longevity of the certificate.

Right? Anybody?

<< Cricket noises >>

Edit: obviously not LE, but other certificate vendors.

[–] dan@upvote.au 3 points 18 hours ago* (last edited 18 hours ago)

DigiCert have said they're not changing their prices as a result. It's still a yearly payment (or every 2 or 3 years if you prefer that).

[–] Passerby6497@lemmy.world 3 points 20 hours ago (1 children)

Lol, never had to buy a cert huh?

You're still buying a year or more at a time, no matter the lifetime of the cert itself. Even if the cert lifetime was a week, you're still buying the same product, no matter how many times you rotate it.

[–] fluckx@lemmy.world 4 points 20 hours ago (1 children)

Personally? No I've never bought a cert before. Given there's free alternatives and it's a homelab it doesn't make sense. Otherwise I've used them on AWS, where ACM also just provides them for free.

What you're saying is that certificate providers will still charge you and provide certificates for a year, but just provide you with N certificates to span that year?

E.g. if the duration is 45 days then they will give you 365/45 certificates ?

[–] Passerby6497@lemmy.world 3 points 19 hours ago (1 children)

. if the duration is 45 days then they will give you 365/45 certificates ?

Minimum. We get through digicert at work, and we abuse the hell out of our wildcard and reissue it tons of times a year. You're buying a service for the year, not an individual cert.

[–] fluckx@lemmy.world 1 points 19 hours ago

Interesting. Thanks for that insight :)

[–] atzanteol@sh.itjust.works 9 points 1 day ago (1 children)

It's being deiven by the browsers. Shorter certs mean less time for a compromised certificate to be causing trouble.

https://cabforum.org/working-groups/server/baseline-requirements/requirements/

[–] helix@feddit.org 1 points 1 day ago (2 children)

most trouble is probably caused in the first few days. Doesn't matter if it's 45 or 90 days, it would have to be a few hours to be meaningfully short. Given that automating things like this is annoying sometimes, you'll be sure people will max out the 45 days…

I'm pretty sure it's the SSL seller lobby just wanting more money, tbh. Selling snake oil security.

[–] Passerby6497@lemmy.world 1 points 20 hours ago* (last edited 20 hours ago) (1 children)

Given that automating things like this is annoying sometimes, you'll be sure people will max out the 45 days…

I know from professional experience that this is a stupid as fuck idea that leads to outages. One of the many reasons I'm working to automate those annoying ones.

Also, don't let perfect be the enemy of better.

[–] helix@feddit.org 0 points 11 hours ago

I'm not a capitalist, I don't care about outages. I can live with Facebook being down for a few days, or my bank not accepting transfers for a day or so. Then again, I grew up with the internet in the 90s and prioritise good software and tools over availability, I guess?

Obviously at my job I have to do what my employer thinks. But if nobody cared I'd definitely do our Gitlab upgrades once a week once they're out and not in some weird "maintenance window" mandated by SLAs and stakeholders.

[–] False@lemmy.world 1 points 22 hours ago

Yeah you can still do a lot of damage in a few hours, but 45 days is a meaningful reduction in exposure time from year+