What are the versions of TLS in PCI DSS?

TLS Versions in PCI DSS

The Payment Card Industry Data Security Standard (PCI DSS) is a set of security standards that businesses must follow to protect customer credit card information. One of the requirements of PCI DSS is that businesses must use secure communication protocols to protect data in transit.

TLS (Transport Layer Security) is a cryptographic protocol that provides secure communication between two computers. There are several versions of TLS, with each new version providing improved security. PCI DSS requires businesses to use at least TLS 1.2, and recommends using TLS 1.3.

Legacy TLS Versions

PCI DSS allows businesses to use legacy TLS versions, such as TLS 1.0 and TLS 1.1, under certain circumstances. These circumstances are:

• The business is using a point-of-sale (POS) terminal that cannot support TLS 1.2 or higher.
• The business is using a legacy application that cannot support TLS 1.2 or higher.

If a business is using a legacy TLS version, it must take steps to mitigate the risks associated with using that version. These steps include:

• Disabling weak ciphers and algorithms.
• Using strong authentication mechanisms.
• Monitoring the system for suspicious activity.

Recommended TLS Versions

PCI DSS recommends that businesses use TLS 1.2 or TLS 1.3 for optimal security. TLS 1.2 and TLS 1.3 provide stronger security than legacy TLS versions, and they are supported by most modern browsers and operating systems.

How to Enable TLS 1.2 or TLS 1.3

To enable TLS 1.2 or TLS 1.3, you must configure your web server and your client applications. The specific configuration steps will vary depending on the software you are using.

Conclusion

PCI DSS requires businesses to use secure communication protocols to protect customer credit card information. TLS is a cryptographic protocol that provides secure communication between two computers. PCI DSS requires businesses to use at least TLS 1.2, and recommends using TLS 1.3.