Interesting. Could you determine if such a program had been used to make the modifications?
Right off the bat?
If the record is checksummed and never meant to be modified, then no, not realistically, but given enough time and money, who knows.
Just be suspicious of anything digitized. Hackers forge forgeries of forgeries
Yes.
I was involved in an IP court case. Someone claimed to own a design and had back dated files to show they had the idea first. BUT this person didn’t understand that the creation date, computer info, and username were all stored in the file. I showed this info in a sworn deposition. He dropped the claims when he was warned he is guilty of perjury.
Open the files in question in a txt editor and you can sometimes find the creation dates.
Goodluck
Such a vague question... It needs to be narrowed down to type of computer, software, etc.
I have a website running content management software. It runs on the Apache operating system the most free servers use.
There is a daily log file on that the apache system uses. It logs all changes to the system made by the users.