Adam Shostack 
Does lockdown mode protect against the latest apple vulns?
Jeff Moss@adamshostack Looks like it is in attached imaging handling, so I am guessing another iMessage vulnerability.
Jon Callas 烏@thedarktangent @adamshostack They said it is an image processing bug, so it probably manifests in messages, and is mitigated by lockdown mode. I think that yes to both is a decent SWAG.