Yandex Browser uses its own integrated security system called Protect, which scans downloaded files for viruses, blocks infected and fraudulent websites and disturbing advertising, and secures user passwords, credit card data, and Yandex Browser settings.
Virus protection mechanism in Yandex Browser
Yandex Browser checks all executable and archived files for viruses and blocks pages that may spread malware.
The Protect panel opens. In the connection status section, click Learn more.
In the Permissions section, find the JavaScript field and select Block from the list.
Click → Settings → Sites.
At the bottom of the page, click Advanced site settings.
In the JavaScript section, select Not allowed.
Fix the time error
Site certificates that guarantee a secure connection have a limited validity period. If a certificate expires, then it is not safe to send your information to the site. This is why Yandex Browser blocks sites with expired certificates.
If time settings are not accurate on your computer, Yandex Browser can't determine if the site's certificate is current or not. This is why, when opening the site, you will see the message “Your clock is ahead” or “Your clock is behind”.
To continue on to that site, click Update date and time. In the system settings that open, set the correct date and time and then refresh your browser page.