Beginning in February 2017, Microsoft may display an Invalid Certificate warning to inform you that your connection is not optimally secure. Microsoft advises that the SHA-1 digital certificates are vulnerable to security threats, which could allow an attacker to spoof content, perform phishing attacks, or perform man-in-the-middle attacks. Please be advised that while TransUnion is not disabling the use of SHA-1 digital certificates at this time, we highly encourage your organization to migrate to a TUNA SHA-2 digital certificate immediately.
If you are an existing TUNA customer and have not yet downloaded the new SHA-2 digital certificate, please see the Implementation Instructions for the SHA-2 Upgrade
(please log in to access the instructions).
For more information about TUNA, see the TransUnion Net Access Resources page
TransUnion no longer supports Secure Sockets Layer (SSL) 3.0. The preferred Internet Browser versions include:
Internet Explorer (IE), versions 7-11(v11 highly preferred)
- Google Chrome, versions 1-40
- Mozilla Firefox, versions 1-36