Sites use certificates that are given out by authoritative, trusted organizations to protect against phishing and data theft. A certificate confirms a site's authenticity and participates in the data encryption process over HTTPS connections.
Yandex.Browser checks site certificates. If there is any doubt about a certificate's authenticity, the browser will warn you.
In this case, it's not clear if the certificate was installed by the site administrator or hackers, and you will see the following warning:
You can either choose to not visit the site, or add the certificate to your trusted list. If you choose the latter, the certificate will be included in the list for 30 days and then you will have to once again confirm its trustworthiness.
If you want to visit the site, take the following security measures:
Antiviruses, ad blockers, and site-monitoring programs (like Fiddler) can substitute their own certificates for those of the website. This is so that the program can decrypt traffic. However, certificate substitutions can cause the following problems:
Yandex.Browser warns you about the following problems:
To visit a site:
Decide if you are prepared to trust the certificate preparer with your personal information:
|I'm ready to entrust my information to them||I'm not ready to entrust my information to them|
Click Trust this certificate.
Turn off HTTPS-connection checking in your programs. Use the instructions for the following:
For all other programs (like Fiddler), try disabling HTTPS checks using the analogous instructions listed above.
Attention! If you disable HTTPS checks, it doesn't mean you're unprotected. Yandex.Browser runs its own security checks on your downloading files, blocks malicious pages and banners, and uses advanced protection for bank and payment-system pages.
If disabling HTTPS checks didn't fix your issue and you don't need the program that installed the certificate, then try disabling or closing that program.