When DeepScreen (and possibly Hardened Mode) first came on the scene I can recall it pinging lots of ‘old’ but legit files even winword.exe and excel.exe executables. Just checked my Settings > General > Exclusions > CyberCapture and both executables are in there now that DeepScreen isn’t in those settings.

So I believe this could pick up on some old files (but legit) not yet in its database because they are so old.