Abrowser https issue? (and broken security warning)

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Avron
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Joined: 08/18/2020

When I try to access https://tehnoetic.com with Abrowser, I get an error message "Warning: Potential Security Risk Ahead" (actually, my message is in French but by searching on Mozilla website, I found that this is probably the English version of it).

Clicking on "Learn more" goes to https://trisquel.info/en/wiki/connection-not-secure which gives a page saying "The page connection-not-secure does not exist." Is that a problem that I can fix in Abrowser settings, to link an existing page either from Trisquel or from Mozilla?

Besides, looking at security information, the certificate seems ok but there is a message saying that data are not ciphered. With ungoogled chromium from guix, there is no warning at all and it says everything is secure. Is something wrong with Abrowser here? Is Abrowser not able to use cipghered transmission, unlike ungoogled chromium? I remember having exactly the same situation with other websites but I can't remember which ones now.

panties
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Joined: 02/02/2021

What is cipghered transmission?

Avron
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Joined: 08/18/2020

Sorry, it is a typing error that I missed when reviewing my message, I meant ciphered.

jlb
jlb
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Joined: 03/28/2021

Maybe the site's certificate is using an old version of TLS?

Avron
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Joined: 08/18/2020

Thanks for the hint but I have no clue how to check that.

I clicked on "advanced", it says there is a SEC_ERROR_UNKNOWN_ISSUER error, which seems to be about the certificate. I looked at https://www.sslchecker.com/sslchecker to try getting more information, it says "chain cert 1" is missing but on other sites that work it says "root 1" is missing so "missing" might not reflect a problem and I don't know what to look for.