Let's Encrypt introduces six-day certificates - What does this mean for website operators?

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20.02.2025
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Let's encrypt logo Let's Encrypt, the popular certification authority for free TLS certificates, is planning a significant change: in the future, certificates with a validity period of just six days will be offered. This innovation has far-reaching implications for the security and management of SSL/TLS certificates.

Why is Let's Encrypt introducing six-day certificates?

Until now, Let's Encrypt certificates have a validity period of 90 days. The reduction to six days has several goals:

  • Increased security: If a private key is compromised, the risk is limited by a shorter validity period.
  • Promoting automation: Shorter validity periods force operators to automate their certificate management.
  • Fewer problems with revocations: Since certificates expire more quickly, the need for revocation mechanisms, which are often unreliable, is reduced.

Challenges for website operators

The introduction of six-day certificates means that website operators must prepare for significantly more frequent renewals. Manual renewals are hardly practical anymore - instead, automation becomes mandatory.

Many companies and administrators must therefore adapt their existing processes and ensure that their systems renew certificates in a timely manner. A failed renewal can lead to a website being classified as unsafe or even no longer being accessible.

Livewatch.de as a solution for certificate monitoring

With the introduction of six-day certificates, reliable monitoring of SSL/TLS certificates becomes essential. This is where Livewatch.de comes into play. The service offers comprehensive monitoring of certificates and notifies administrators early before a certificate expires or problems arise.

Benefits of Livewatch.de:

  • Automatic SSL/TLS certificate check
  • Early warnings via email or SMS
  • Detailed analysis and reporting
  • Integration into existing IT infrastructures

With Livewatch.de, companies can ensure that their websites remain protected at all times, even with the new short certificate validity periods.

Conclusion

The introduction of six-day certificates by Let's Encrypt represents a major change. While the security benefits are clear, website operators must prepare for fully automated certificate management. With solutions such as Livewatch.de, this transition can be seamless and certificate management can be made efficient and secure.

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Knowledge Base

Here we answer questions about server monitoring from Livewatch. If you have a question that we have not yet answered here, please contact us.

How do I recognize valid SSL certificates?

Verifying the validity of an SSL certificate is important to ensure that the connection to a website is secure and that the data transmitted is encrypted. Here are some steps to check the validity of an SSL certificate:

HTTPS connection: Check if the website uses "https://" instead of "http://". The "s" stands for "secure" and indicates that an encrypted connection is used.

Green lock icon: A green lock icon in the browser address bar is an indication that the website has a valid SSL certificate. Click on the lock icon for more information.

View certificate information: Click the lock icon and select the View Certificate or View Certificate Information option, depending on your browser. You can view details about the certificate here.

Verify the certificate issuer (CA): Make sure the certificate was issued by a trusted certificate authority (CA). Popular CAs include Let's Encrypt, Comodo, Symantec, etc.

Check expiration date: Check the expiration date of the certificate. An expired certificate is no longer valid. Some browsers warn about expired certificates.

Hostname Match: Make sure that the hostname specified on the certificate matches the hostname of the website. If the names don't match, it could indicate an insecure connection.

Additional certificate information: In the certificate information you can also check whether the certificate is correctly configured for the specific use (e.g., for server authorization).

Use online tools: There are also online tools that you can use to check the validity of an SSL certificate. Just enter the website URL and the tool will show you the certificate information.

It is important that you complete these checks to ensure you are on a safe and trustworthy website. Insecure or expired certificates could indicate potential security risks.

With the SSL Certificate Check you can check the validity of your HTTPS domain. To do this, enter the SSL Url to be c...

With the SSL Certificate Check you can check the validity of your HTTPS domain. To do this, enter the SSL Url to be checked. We determine the remaining term of the validity as well as the availability at all.