Incident Description: Data synchronisation has been halted due to an error “OpenSSL::SSL::SSLError” error=“SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed". Error has been first logged on May 30, 2020 8:30 PM UTC.

Root cause: - One of the root certificates (Sectiago root certificate) used by the OpenVPN ssl client to connect to the data source expired on May 30, 2020.
- This issue was not in anyway related to Flydata's core system/application. For more information, please refer this https://www.agwa.name/blog/post/fixing_the_addtrust_root_expiration

Resolution: The expired certificate has been updated and data synchronisation for all customer has since been resumed.

Next Steps: We have looked into all root certificate expirations and have set a clear action plan of updating/renewing the certificates before the expiry dates to avoid such issues in future.