Where did this software come from?
In a modern software system, knowing what a program does is only part of the problem.
You also need to know where it came from, how it was built, which environment produced it, and whether anything changed along the way.
That history is known as software provenance.
Build attestations, hashes, signatures, timestamps, source information, and release records can all become part of that chain.
Individually, each record may appear valid.
What matters is whether they connect into one continuous and trustworthy history.
Sometimes, the most important clue is not an obvious error.
It may be something almost meaningless.
A difference in formatting.
A character that should not be there.
A trace small enough to be ignored.
This section explores how software provenance works, why it matters, and how tiny inconsistencies can reveal that something passed through a path it was never supposed to take.