For larger files, the malware generates four of these codes. But due to a programming error, it keeps overwriting each new code with the previous one in the same slot, like writing four different combinations on a single sticky note and keeping only the last one. By the time it’s done, three of the four codes are gone forever. The scrambled data they correspond to is permanently unreadable for the victim, security researchers, and the attackers themselves.
That’s a wild bus factor though
You mean if the bus gets hit by a bus?
This is how you drove down probability.
The risks of Steve getting fatally hit by a bus are, statistically, very low.
However, there are even fewer busses getting fatally hit by other busses.
Ipsp facto, lower risk, extra 9s.
That’s risk tolerance 101.
Further, your DD 5.25" could have been set up in a RAID array so you could have 3 buses full of diskettes and only need two buses to reach the destination to rebuild the whole file system.