LexisNexis Cirium incident

Temporary removal of Alerts API SMTP delivery option

LexisNexis Cirium experienced a minor incident on April 8, 2026 affecting Cirium Sky™ APIs, lasting 49d 7h. The incident has been resolved; the full update timeline is below.

Started: Apr 08, 2026, 03:04 PM UTC
Resolved: May 27, 2026, 10:51 PM UTC
Duration: 49d 7h
Detected by Pingoru: Apr 08, 2026, 03:04 PM UTC

Affected components

Cirium Sky™ APIs

Update timeline

identified Apr 08, 2026, 03:04 PM UTC

Due to a security concern, we have temporarily deactivated the Alerts API SMTP (email) delivery option that is available for testing and evaluation purposes only. To continue testing the Alerts API on either the Flightstats or Sky platforms, please configure delivery to an HTTPS endpoint that accepts POST requests, as per https://developer.cirium.com/apis/cirium-sky-api/flight-alerts. We apologise for any inconvenience and will provide an update as soon as there is progress to report.
resolved May 27, 2026, 10:51 PM UTC

This has been resolved and the SMTP (email) delivery option has been re-enabled in the Alerts API.