Some Samsung devices are randomly sending photos taken with the camera to contacts in the address book without permission. The problem affected Galaxy S9 and S9+ devices, but we cannot exclude that other devices may have been affected. Samsung confirmed it is aware of the reports and that its technical staff is investigating the problem. Samsung owners can revoke Samsung Messages permissions to access storage (Settings -> Apps -> Samsung Messages -> Permissions -> Storage) The glitch was introduced with the push of RCS messaging updates by telco carriers.”]
Source: https://securityaffairs.co/wordpress/74117/mobile-2/samsung-bug-photos.html