Emergency alerts and tests issued in the CAP format have, for security reasons, specific signed certificates. These certificates are routinely updated. FEMA, scheduled an update to its security certificate on June 24 at 11:24 a.m. ET.
Both Sage Alerting Systems and Monroe/Digital Alert Systems have released updates that users must upload to their units to make the devices compliant. Stations that do not update their EAS Sage and Digital Alert equipment will not be able to receive required tests and/or alerts from the IPAWS server after yesterday. Links for both systems are below.