# Fortran-lang website security issue?
**URL:** https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791
**Category:** Meta
**Created:** [May 25, 2025, 7:01pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791 "2025-05-25T19:01:19Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@fish830911](https://fortran-lang.discourse.group/u/fish830911)
#### Post date: [May 25, 2025, 7:01pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/1 "2025-05-25T19:01:19Z")
Dear all,
The following screenshots comes from me scrolling thought the following [fortran-lang wiki](https://fortran-lang.org/learn/oop_features_in_fortran/performance_and_ease_of_use/):
Just wondering what happened, or is it my local problem.
---
### Author:  [@ivanpribec](https://fortran-lang.discourse.group/u/ivanpribec)
#### Post date: [May 25, 2025, 7:21pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/2 "2025-05-25T19:21:00Z")
Same connecting with Google Chrome. It says
> This server could not prove that it is [fortran-lang.org](http://fortran-lang.org) ; its security certificate expired in the last day.
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### Author:  [@RonShepard](https://fortran-lang.discourse.group/u/RonShepard)
#### Post date: [May 25, 2025, 7:21pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/3 "2025-05-25T19:21:50Z")
Firefox also prints a warning for that web site.
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### Author:  [@certik](https://fortran-lang.discourse.group/u/certik)
#### Post date: [May 25, 2025, 10:03pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/4 "2025-05-25T22:03:05Z")
Same here. I can have a look tomorrow. Github says at [https://github.com/fortran-lang/webpage/settings/pages:](https://github.com/fortran-lang/webpage/settings/pages:)
So it almost seems like a github issue with updating the certificate, unless something needs to be configured at our dns.
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### Author:  [@certik](https://fortran-lang.discourse.group/u/certik)
#### Post date: [May 26, 2025, 8:53am UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/5 "2025-05-26T08:53:14Z")
Ok, GitHub gave a better error message now:
I am not sure what changed. Investigating.
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### Author:  [@certik](https://fortran-lang.discourse.group/u/certik)
#### Post date: [May 26, 2025, 9:13am UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/6 "2025-05-26T09:13:32Z")
Ok, so using [Managing a custom domain for your GitHub Pages site - GitHub Docs](https://docs.github.com/en/pages/configuring-a-custom-domain-for-your-github-pages-site/managing-a-custom-domain-for-your-github-pages-site) we can verify that the IP addresses are set correctly:
```auto
$ dig fortran-lang.org +noall +answer -t A
; <<>> DiG 9.10.6 <<>> fortran-lang.org +noall +answer -t A
;; global options: +cmd
fortran-lang.org. 14400 IN A 185.199.109.153
fortran-lang.org. 14400 IN A 185.199.111.153
fortran-lang.org. 14400 IN A 185.199.110.153
fortran-lang.org. 14400 IN A 185.199.108.153
$ dig fortran-lang.org +noall +answer -t AAAA
; <<>> DiG 9.10.6 <<>> fortran-lang.org +noall +answer -t AAAA
;; global options: +cmd
fortran-lang.org. 14400 IN AAAA 2606:50c0:8002::153
fortran-lang.org. 14400 IN AAAA 2606:50c0:8001::153
fortran-lang.org. 14400 IN AAAA 2606:50c0:8003::153
fortran-lang.org. 14400 IN AAAA 2606:50c0:8000::153
```
That looks good. I changed `www` from `fortran-lang.github.com` to `fortran-lang.github.io`, according to the docs that should be the right value.
I can’t see any other problem. I am also “verifying” the domain using [Verifying or approving a domain for your organization - GitHub Docs](https://docs.github.com/en/organizations/managing-organization-settings/verifying-or-approving-a-domain-for-your-organization), that worked:
and
From the error message, it’s the `www.fortran-lang.org` that was incorrectly configured, and I think indeed it was, it was poinging to `.com` instead of `.io`, so I am hoping that was it. We’ll have to wait 4h and then try again.
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### Author:  [@certik](https://fortran-lang.discourse.group/u/certik)
#### Post date: [May 26, 2025, 3:54pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/7 "2025-05-26T15:54:25Z")
Ok, that was it, progress:
And I clicked the Enforce HTTPS and that also worked:
And the page is back on:
So the issue was that `www.fortran-lang.org` was pointing to `fortran-lang.github.com` instead of `fortran-lang.github.io`, I am guessing that has always been the case, but only now it actually failed at github, I guess they decided to put some extra enforcement of this.
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### Author:  [@ivanpribec](https://fortran-lang.discourse.group/u/ivanpribec)
#### Post date: [May 26, 2025, 4:17pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/8 "2025-05-26T16:17:55Z")
Works again without any warnings! Thanks for fixing that.
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### Author:  [@fish830911](https://fortran-lang.discourse.group/u/fish830911)
#### Post date: [May 26, 2025, 6:35pm UTC](https://fortran-lang.discourse.group/t/fortran-lang-website-security-issue/9791/9 "2025-05-26T18:35:56Z")
Working for me too! Thank you so much 🙏