TLS 1.0 Support Deprecation

  • Modified on: Wed, 3 Jan, 2018 at 2:27 PM

As part of our ongoing security review, we will be disabling support for TLS 1.0 from 1st December 2017. This means we will only support TLS 1.1 and TLS 1.2, which provides the strongest protection, and the most robust encryption, for your data. However, some older browser versions may not be compatible with this safer protocol.

To ensure no disruption to service, you may wish to make sure you are using one of the following browsers from 1st December 2018:

  • Internet Explorer 11, or Microsoft Edge
  • Firefox version 27 or higher
  • Google Chrome 38 (although versions 22-37 will be compatible with most operating systems)
  • Safari 7 (desktop)
  • Safari 5 (mobile)
  • Android 5.0 (Lollipop)

Many browsers not listed here will still support the new protocol, providing certain conditions are met. However, the above list will support TLS 1.2 by default. If you wish to continue using an older browser, you will need to make sure it is configured to support TLS 1.1 or TLS 1.2.


What is TLS?

TLS stands for "Transport Layer Security". It is a protocol that protects your data when it is being transferred between two communicating applications. We use to it keep your data safe, while it is being transferred between the Celery application and your browser.

While older versions (TLS 1.0 and TLS 1.1) offer a good degree of protection, they have become quite outdated, and could lead to vulnerabilities. TLS 1.2 is the latest version of the protocol, and offers the tightest security. The security of your data is our priority, and for this reason, we are dropping support for TLS 1.0 going forward.

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