The cybersecurity model is Mythos, which was never made publicly available. It is only available to a list of US government approved companies.
> They said it wouldn't be usable for offensive purposes
No, they said Fable would refuse for cybersecurity and offensive purposes. You are conflating Fable with Mythos.
I guess the underlying issue is that there is this model that is very capable, but it's being hobbled because of a fear of abuse. It may well be justified, but for a legitimate user any restriction just makes it a worse product and after all the puffery around how good it is (and some practical experience of how good it is) it's a pretty shit experience. "Here's our best model, no you can't really use it".
That's what I was trying to use it for. Find bugs. Anthropic just refused to let it find the memory safety bugs in my C project.
Fable 5, harden my openssl project. Then you use the diffs/summary to find out what the bug is for your exploit.
This "only super special corporations get the model" nonsense is dividing society into haves and have-nots.