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 the certificate could have been installed by either the site administrator or hackers. Your will see the following warning:
You can either choose to not visit the site, or enter the certificate in your list of trusted ones. If you chose 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 these 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.
Disable HTTPS connection testing in your programs. Use the instructions for the following:
For all other programs (like Fiddler), try disabling HTTPS scanning using the analogous instructions listed above.
Attention! You won't be unprotected if you disable HTTPS tests: 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 help and you don't need the program that installed the certificate, then try disabling or closing that program.