What does certificate error mean? An article to understand the causes and effects

when browsing websites and using encryption applications, many people have encountered abnormal situations of pop-up prompts. Certificate errors are a more common cyber security prompt. Many people have little understanding of this, and they are worried about security risks and do not know how to deal with them. This article will explain in detail from the definition, causes, effects and solutions of certificate errors to help you thoroughly understand this network problem and deal with related scenarios calmly.

What is a certificate error?

to understand the certificate error, we must first understand the role of SSL/TLS certificate, which is the core certificate to verify the identity of the website and ensure the encrypted transmission of data.

1, the basic definition of certificate error

certificate error refers to the prompt message that pops up when the browser or application verifies the SSL/TLS certificate of the website and finds that the certificate does not meet the security standards or has an abnormality. This kind of prompt means that the identity of the current website may not be confirmed, and the security of data transmission is not guaranteed. It is an early warning signal issued by the cyber security system.

2 Common manifestations of certificate errors

certificate error in various forms, the common browser address bar displays a red exclamation mark or "not safe" words, pop-up window prompts "certificate has expired" "certificate is not trusted" "domain name does not match" and other content, some browsers will directly prevent users from continuing to visit the site, forced to remind users of the risk.

Common causes of certificate errors?

certificate error does not appear out of thin air, there are often specific incentives behind it, which can be roughly divided into two categories: the certificate itself and the environment setting problem.

1, the certificate itself

this is the main reason for the certificate error, including the certificate beyond the expiration date, many website administrators will ignore the certificate update time, resulting in the certificate can not be verified after the expiration of the normal certificate authority is not trusted, some small institutions issued certificates are not included in mainstream browsers, will also trigger certificate error; and certificate binding domain name does not match the current access domain name, such as the certificate is issued for the second-level domain name, but the user visits the main domain name, the same will appear verification failure.

2, client environment settings

the user's own device settings may also lead to certificate errors, such as computer system time and the actual time deviation is too large, the valid period of the certificate verification depends on the system time, the time error will make the browser misjudge the certificate has expired; there are browser security settings too high, or installed untrusted root certificate, will also interfere with the normal certificate verification process, causing unnecessary certificate error prompt.

What are the effects of certificate errors?

certificate error seems to be just a pop-up window prompt, but it will bring different degrees of impact to both users and websites, which should not be underestimated.

1, the security impact on ordinary users

for ordinary users, the certificate error means that the current site may be visited phishing site, once ignored prompts to continue to visit, enter the account password, payment information and other sensitive data may be intercepted and stolen by hackers, causing property damage or personal information leakage; even if not phishing site, certificate error will lead to data transmission is not encrypted, information in the transmission process is easily tampered with, affecting the use of experience and information security.

2, the negative impact on the operation of the website

for website operators, certificate errors will seriously affect the credibility and traffic of the website, after users see the certificate error prompt, most of them will choose to close the page, resulting in a significant increase in the bounce rate of the website; long-term certificate errors will also affect the website's search engine ranking, search engines will regard certificate errors as security bugs, reduce the weight and exposure of the website, and then affect the operational efficiency of the website.

How to troubleshoot and solve certificate errors?

encountered certificate error do not panic, as long as the cause, can be solved by the corresponding method troubleshooting, restore normal access and security status.

1, the user's rapid investigation method

the user encounters a certificate error, first of all, you can check whether the system time of the device is accurate, and then adjust the time to the current correct time to re-visit; secondly, you can try to replace different browsers to rule out browser settings; if you visit a niche website, you can confirm whether the website is a regular website, if you confirm security, you can temporarily trust the certificate in the browser settings, but it is not necessary to recommend this operation to avoid encountering security risks.

2, professional solutions on the website

the website operator found that the certificate error, to check the valid period of the certificate in time, if it has expired, immediately apply to the regular agency for renewal or re-purchase of the certificate; confirm whether the domain name bound to the certificate is consistent with the website domain name, if there is a mismatch need to re-apply for the corresponding domain name certificate; at the same time to ensure that the certificate authority is the authority trusted by mainstream browsers, avoid the use of certificates issued by unqualified institutions, and solve the problem of certificate errors from the root cause.

To sum up, certificate errors are abnormal prompts for cyber security verification, covering definitions, causes, effects and solutions. Whether ordinary users or website operators, they need to understand the relevant knowledge of certificate errors. Users should be vigilant when encountering certificate errors and investigate risks in a timely manner. Website parties should regularly maintain certificates to avoid certificate errors and jointly ensure the security and stability of the network environment.