come to light(bring (something) to light – to discover facts, often about something bad or illegal. Several other problems came to light during the course of the investigation. CI Alexander Demidov)
become public property(When A Personal Life Becomes Public Property | because it isn't true that something becomes public property when it's been posted in a chat forum or social networking site, and the owners of this forum could ... | ... in the public eye. This concerns the process by which a discovered antiquity becomes public property or otherwise enters the public domain. Alexander Demidov)
