Server Features » TLS Certificate » Unknown CA

TLS certificate status: Unknown CA

Percentage of SSL/TLS servers with certificate status Unknown/non-trusted Certificate Authority. Showing percentages by IRC server software.

About this test result: The certificate is signed by an unknown or non-trusted Certificate Authority. This will generate a certificate warning on the IRC client which the user will have to ignore. This is not secure as it allows a Man-in-the-Middle attack.
Note on statistics: there is a difference in the gathering of TLS servers between 2017-2019 and 2020-onwards, see SSL/TLS statistics on the data page.

Table

Percentage of SSL/TLS servers with certificate status Unknown/non-trusted Certificate Authority. Showing percentages by IRC server software.
Software Sep 2017Dec 2018Dec 2019Dec 2020Dec 2021
bahamut 7% 4% 4% 6% 3%
charybdis 10% 9% 7% 11% 19%
Ergo 0% 0% 0% 0% 38%
Hybrid 12% 10% 10% 10% 14%
InspIRCd 43% 41% 38% 32% 39%
IRCNet 50% 100% 0% 0% 17%
IRCU 9% 20% 7% 9% 9%
Nefarious 0% 0% 0% 0% 10%
ngircd 34% 34% 22% 24% 33%
Ratbox 19% 18% 17% 23% 26%
SynchronetIRCd 0% 0% 0% 0% 14%
UnrealIRCd 8% 8% 8% 7% 12%
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