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TLS Updates
We are making changes to our implementation of Transport Layer Security (TLS).
TLS 1.3
To maintain the highest security standards for both browser-based and server-to-server
connections, we will enable TLS 1.3 on the endpoints listed below. This enhancement is
optional and will supplement the existing TLS 1.2 support, which will remain in place.
We will make changes to these endpoints on these dates:
Testing environment
: May 26, 2026ics2wstesta.ic3.com
ics2wstest.ic3.com
apitest.cybersource.com
Production environment
: June 2, 2026ics2wsa.ic3.com
ics2ws.ic3.com
api.cybersource.com
api.in.cybersource.com
ics2ws.in.ic3.com
Contact Customer Support if you have any questions about these changes.
TLS Certificate Lifetime Reduction
In alignment with new CA/Browser Forum regulations, the maximum TLS certificate lifetime
will be reduced gradually as follows:
• Currently, the maximum lifetime for a TLS certificate is 200 days.
• Beginning March 15, 2027, the maximum lifetime for a TLS certificate will be 100 days.
• Beginning March 15, 2029, the maximum lifetime for a TLS certificate will be 47 days.
See this blog for more information about the TLS certificate lifetime changes:
How will this change impact connectivity?
Server-level (leaf) SSL/TLS certificates will remain valid until their scheduled expiration.
Server-level (leaf) TLS certificates have shorter lifespans and must be reissued more
frequently. We therefore recommend that clients trust the root certificate instead.
What is our recommendation?
We continue to recommend trusting the Root TLS certificates for all secure
endpoints. This approach removes the need for periodic renewal of server level certificates
and helps prevent connection failures caused by expired leaf certificates.
How can I tell which TLS certificate I am using?
Contact your server administrator or your network support team.
Where can I find the TLS Root certificate?
Continue trusting the root certificate to maintain connectivity with supported endpoints. You
can download the root certificate from this article:
Contact your Customer Support representatives with any questions.