Server Features » TLS Certificate » Self-signed » Nefarious

TLS certificate status: Self-signed

Percentage of SSL/TLS servers with certificate status Self-signed certificate. Showing percentages for Nefarious servers only.

About this test result: The certificate is self-signed. Since anyone can create such a certificate it is not secure. 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 Self-signed certificate. Showing percentages for Nefarious servers only.
Version Sep 2017Dec 2018Dec 2019Dec 2020Dec 2021
2.0 51% 59% 64% 60% 59%
(Download JSON data set)