Bad Blocks

I scan the memory, block by block, looking for segment errors.
The scan is clear, but I know that there’s a bad block in there somewhere.
I run it again. Still clear.
Then I shift the program to a different location. The exposed virus crawls block-by-block back underneath it like a cockroach scuttling back under a refrigerator that’s been moved.
Gotcha!
I run the scanner again, this time from an external address.
All clear on the memory space.
And that’s what my lawyer said when they found the virus running free, carried out of the blocks by my memory scanner.