Invalid certificate in the browser: what is this

Certificates are required to confirm the safety of the visited resource. In almost every case, they are reliable, since a thorough check by specialized services first takes place, and then they are issued. But sometimes there are situations when there is an error in the browser "Opera": an error certificate. Of course, you can simply ignore it and continue to work with the site. But still it is better to understand why this is happening, and what is an erroneous security certificate.

Expired

Like many other types of documents, the certificate is issued only for a certain period. As you approach the end date, employees responsible for maintaining the resource are required to update the document. It happens that there is simply no time for this action, or it is not possible to update the certificate for some other reason.

As a result, if a user tries to access the site he needs, a message will be displayed notifying the expiration of the certificate. If the resource causes absolute trust and guarantees reliability, then the erroneous certificate can be ignored and continue to work with the site. Most often, in case of expiration, the security of the resource should not be reduced.

A fake certificate

You need to be careful, since the exact same certificate error can occur when the document is not genuine. Typically, fakes are created for phishing services. When a user visits a similar site, attackers take possession of the data that will be left in the corresponding fields.

Invalid date

Another reason may be the date, which on the computer for some reason lost its way. This can lead not only to the appearance of an error about the expired validity, but to the inability to activate this document. The latter is a problem, mainly for those who own the resource. The same problem can also be a cause of SSL connection errors in the browser.

Other Errors

It happens that the certificate was issued only for a certain resource, and it will not be possible to install it on another site. And if an unsuitable document for the site is still installed, then when you try to go to it, a certificate error about the wrong name will pop up. In this case, you can ignore the error or leave the site. If you need to continue working with the site, you must click on the "Skip" button and go to the landing page.

Sometimes an error appears, indicating that the party that signed the certificate was not found. The document is usually signed by large companies that are responsible for confirming the high reliability of the resource. To see the list of such certification centers, you can start the browser "Opera" and do the following:

• Click on the main button and go to the program settings.
• Go to the advanced settings section and select the "Security" tab.
• Click on the button "Manage certificates" and go to the tab with publishers.

There are such certificates, which are signed by the leaders of the organization or its employees. If you have confidence in the people who signed the certificate, then you can go to the site without fear. In order for services that use such a signature to be considered safe, its owners need to be added to the list of certification centers. There are situations when an incorrect certificate appears after infection of technology by virus programs. To avoid this, it is better to install reliable anti-virus software on your computer and from time to time scan the system for threats.

Conclusion

Certificates are needed to confirm the reliability and safety of the resource. This is very important for such sites on which the user enters personal information or performs some kind of operations with money. Such documents are a kind of guarantee that the conducted operations will be confidential, and the owners of the resource are honest people. Therefore, if an erroneous certificate has arisen, then risk is not recommended once again. If you do not know anything about this site, then it's better to just leave it. If earlier, with this service, there were no such errors in the browser, and there is trust in it, then you can continue to work.