I had similar encounter, (s), [on a Mac] showing a PNG File in Hi-light…
Obviously that got my immediate interest, hence a restore of my system’s integrity 1), The PNG was an Open-Source type.
2), It contained 1.7 K + Bytes.
3), The Bytes were ADDED to the Photo; Small albeit, but potent.
4), Meta Data.
5), Able to OPEN: Audio [Computer], Camera Functions [on my Phone], VOX Enabled.
6), There was more…
I understand the concept, as it’s INTENDED TO BE USED; Per License Agreement, (s), upon downloading said Open-Source Software; Apache’ etc.. An Entity could EASILY Misuse this type of Functionality, as it is NOT Intended to be Appropriated.
Businesses utilize this for Tracking Consumers, Entities Use this Format to Gain Access to Viable and Pertinent; Data.
I am aware that this is a LOUD Broadcast, and if WRONG, Shall now-up. BUT; What “if” i am right?? Pretty brazen to misuse this material…
How to discover this depends upon the Processor, the NVIDA, etc. Card. The way’s that measure, or calculate the Depth/Spacing of say: Dark-Rift, should be applied here. Yes, banned in 07, yet out there in concept, as well as: PNG and Gradient Images… The download Point of ORACLE’s; Adobe matters here as well. i.e. Was it an Authorized and Valid Purchase/Download from: https://www.ORACLE.com? Or, was it a *free Document of a Third Party, on a Site being visited? Follow me there?