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TLS vs SSL: Similarities and Differences Between SSL and TLS Certificates

Understanding the difference between SSL (Secure Sockets Layer) and TLS (Transport Layer Security) is the first step in ensuring your website offers the highest level of protection for your users’ data.

SSL vs TLS certificates - What is the difference

SSL vs TLS: What’s the Difference?

SSL: The Foundation of Secure Online Communication

SSL is the original protocol developed to secure internet connections. It encrypts data transferred between web servers and browsers, ensuring that sensitive information like credit card numbers and personal details remain confidential and protected from potential cyber threats.

The Role of Certificates

At the heart of SSL and TLS security are certificates, which serve as digital passports for websites. These certificates are issued by Certificate Authorities (CAs), trusted entities that validate the identity of the certificate holder. When a browser connects to a secure website, it checks the site’s SSL/TLS certificate to verify its authenticity before establishing a secure connection.

Certificates come in different types, including:

  • Domain Validation (DV) Certificates: These certificates validate the ownership of the domain name and are the most basic level of certification.
  • Organization Validation (OV) Certificates: OV certificates not only validate domain ownership but also include authentication of the organization behind the domain, providing a higher level of security.
  • Extended Validation (EV) Certificates: Offering the highest level of security, EV certificates involve a thorough verification process of the requesting entity’s legal, operational, and physical existence.

Want to find out which certificate are you using? Check your SSL/TLS certificate with our dedicated tool or click the button below.

TLS: The Evolution of Encryption

TLS is the successor to SSL, designed to provide enhanced security features. It’s the standard protocol used for secure communications on the internet today. TLS improves upon SSL’s encryption methods, offering stronger protection against attacks and vulnerabilities.

CharacteristicsSecure Sockets Layer (SSL)Transport Layer Security (TLS)
Cipher suiteOlder algorithms with known vulnerabilitiesAdvanced encryption algorithms
Authentication of messagesMACsHMACs
HandshakeSlow and complexFewer stages – faster connection
AlertsTwo types, unencryptedDiverse types, encrypted
Current stateDeprecated1.2 and 1.3 versions are active
Comparing SSL and TLS

Encryption Techniques

SSL and TLS protocols use a variety of encryption techniques to secure data:

  • Asymmetric Cryptography: This involves a pair of keys (public and private) for the encryption and decryption processes. SSL/TLS security is foundational, ensuring that only the intended recipient can decrypt the message.
  • Symmetric Encryption: Unlike asymmetric encryption, symmetric encryption uses the same key for both encryption and decryption, making it faster but requiring a secure method to share the key.
  • Elliptic Curve Cryptography (ECC): ECC is a method of creating public/private key pairs that is more efficient and requires less computing power than traditional methods, making it increasingly popular for SSL/TLS certificates.

The Importance of HTTPS

HTTPS stands for HyperText Transfer Protocol Secure and is the secure version of HTTP, the protocol over which data is sent between your browser and the website you are connected to. The ‘S’ at the end of HTTPS stands for ‘Secure’, meaning SSL/TLS encrypts all communications between your browser and the website.

Why TLS Matters for Your Website

Upgrading to TLS from SSL is not just a technical improvement; it’s a necessity for maintaining trust with your visitors. TLS ensures that your website is safeguarded with the latest encryption standards, protecting user data from being intercepted by malicious actors.

Stay Ahead with TLS Certificate Monitoring

In the digital landscape, the integrity of your website’s security is non-negotiable. Transitioning from SSL to TLS has set a new benchmark for secure online interactions. But maintaining this security standard requires vigilance—specifically, keeping your TLS certificates up to date. Let’s explore why continuous TLS certificate monitoring is essential for your online platform.

Elevate Your Website’s Security with TLS

TLS, the advanced successor to SSL, fortifies your website against emerging cyber threats. It encrypts user data to ensure that every transaction and interaction on your site is shielded from prying eyes. Adopting TLS signifies your commitment to the highest security standards, fostering trust among your users.

Proactive TLS Certificate Expiration Checks

An expired TLS certificate is more than a technical oversight; it’s a breach in your website’s security armor. Visitors greeted with security warnings are likely to retreat, damaging your site’s credibility and your brand’s reputation. Regular monitoring and timely renewal of your TLS certificates are pivotal to preventing these disruptions. You can even monitor self-signed SSL and non-public-facing SSL certificates too.

Don’t wait for security warnings to alert you to an expired certificate. Proactively monitor your TLS certificates to ensure uninterrupted, secure service. Protect your website, safeguard your users, and uphold your reputation with diligent TLS certificate monitoring.


What is a TLS/SSL Certificate?
A TLS/SSL certificate is a digital certificate that authenticates a website’s identity and enables an encrypted connection. It’s a critical component of web security, ensuring that data passed between the web server and browsers remains private.

How do I know if my website uses SSL or TLS?
You can check your website’s security protocol by inspecting the security certificate details through your browser. Modern browsers and websites use TLS for secure communications. Or use TrackSSL to check the TLS certificate of your website.

Why Is It important to upgrade to TLS?
Upgrading to TLS ensures your website benefits from the latest security enhancements and encryption algorithms, protecting against newer threats and vulnerabilities that SSL cannot withstand. Check your TLS certificate for details.

How often should I check my TLS certificate?
It’s recommended to check your TLS certificate’s expiration date regularly, ideally several months before it expires, to ensure a seamless renewal process and avoid any service interruptions. You can learn about the TLS certificate expiration date from TrackSSL, and also sign up for notifications when the expiration date gets closer.

Can SSL and TLS work together?
While SSL and TLS cannot operate simultaneously in the same session, servers can be configured to support both protocols for compatibility with older clients. However, prioritizing TLS for connections is recommended for optimal security.

Which is safer TLS or SSL?
TLS is considered a safer version than SSL. TLS stands as the advanced protocol compared to SSL, with improved security of internet communications. TLS enhances the encryption techniques originally established by SSL, delivering advanced defense against potential cyber threats and security vulnerabilities.