* [CHD-3200] [Security/Parser/Relay] Fixed an issue where the relay auth header could be spoofed in order to have arbitrary messages appended to existing tickets.  This is a low severity issue since it's no different than someone spoofing an email address with a known ticket mask from someone else.  Cerb won't automatically add these new senders to the conversation, and the risk for social engineering is low.  However, because the relay auth header uses internal IDs instead of masks, it makes it easier for someone with malicious intent to hit a large range of IDs.  It would be more tedious to clean up these junk messages than if they created new tickets.
6.1.5-checkpoint