Insecure Protocols - TLS

Updated 1 month ago

ClickSend will disable access to files in our S3 bucket from insecure protocols on December 31st 2023.

Files on our S3 include bucket PDF's, images and other customers sent or received by our customer using our MMS, Post and Fax products (e.g. PDFs of a post letter, an image sent in an MMS).

As of January 1st, ClickSend will only support browsers that support TLS 1.2 and above.

We use TLS is an encryption protocol and we currently support TLS1.0 and TLS 1.1. However TLS 1.0 & 1.1 are not considered secure and will no longer be supported by ClickSend.

Customer on outdated web browsers (more than 7-8 years old) may receive a TLS/SSL error if they try to download a PDF, Image or CSV file. If you receive this error or have issues, we suggest you upgrade the Web Browser to an updated and more secure version.

Where can I check my browser Protocol?

Customers can explicitly check if their browser supports TLS 1.2 and above, by visiting https://www.ssllabs.com/ssltest/viewMyClient.html on their browser, checking the "Protocol" section to see if TLS 1.2 and/or TLS 1.3 is supported on their web browser (See below)

*This may also impact customers using a server/software on older infrastructure


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