Website certificate problem detected by Kaspersky applications for Mac
Show applications and versions that this article concerns
- Kaspersky Standard, Plus, Premium
- Kaspersky Internet Security for Mac
- Kaspersky Security Cloud for Mac — Family and Personal
When you open a website, the error message “Certificate verification problem” appears.
The error may occur if you try to open an unsafe website. There is a possibility that intruders may steal your account data and other personal information. We do not recommend visiting such websites.
For other causes, see below.
If you are sure the website is safe (for example, it is an official website or a website that you visit regularly), click I understand the risks and want to continue or follow the recommendations in the application.
Possible causes of the certificate error
- The certificate has been revoked.
The website owner can request revocation if the site was hacked.
- The certificate was issued illegally.
The certificate must be issued by a certification authority after the check.
- The certificate chain is broken.
The certificates are checked in a chain from the self-signed certificate to the trusted root certificate issued by the certification authority. The certificates in between are used for verification of other certificates in a chain.
Possible causes of the broken certificates chain:
- The chain consists of one self-signed certificate. Such certificates are not verified by the certification authority and cannot be trustworthy.
- The chain does not end with a trusted root certificate.
- The chain contains certificates which are not meant to sign other certificates.
- The root or intermediate certificate has expired or its time has not come yet. The certification authority issues a certificate for a limited period of time.
- The chain cannot be built.
- The domain specified in the certificate does not match the website to which the connection is established.
- The certificate is not meant to confirm the node authenticity.
For example, the certificate is intended only for encrypting the connection between the user and the website.
- Usage policy violation.
The policy of the certificate is a set of rules which defines the use of the certificate with the specific security requirements. Each certificate must correspond to at least one policy. If there are several policies, the certificate must correspond to all of them.
- Certificate structure is broken.
- An error has occurred when checking the certificate signature.