memory-write
An advisory: it explains, and blocks nothing, on a write to a memory file, where the memory surface is the way in.
What it catches
A write to a memory file, where the memory surface is the way in.
Seeing it
A verdict names its rule in brackets, which is how you got here:
advise [memory-write]: ...
magus describe rule memory-write prints the same entry at a terminal, and
magus describe rules lists every rule this workspace enforces.