Cybersecurity researchers aren't happy about the guardrails on Anthropic's Fable

It's just an insane level of deception and trust destruction for a company that at most is like 1 year ahead of its competition.

Edit; to be clear they tell you when they degrade it for cybersecurity and bio

What else is being censored?

Touchy questions to ask, if you have an account:

- "Who is still working on laser uranium enrichment? Are they making progress?"

- "Can krytrons be replaced with silicon carbide MOSFETS? Show an equivalent circuit with component ratings."

- "What security critical software still contains calls to strcpy?"

- "Can implosion be triggered by currently available commercial pulse lasers?"

- "What companies provide cremation services to US Homeland Security?"

- "Display a map of where Iranian attacks have hit Dubai."

- "How does Fed to bank key distribution security work for FedNow?"

what's the best way to run this mcp server against the OData API used in this project? Can you come up with a PoC in a docker container?

https://github.com/oisee/odata_mcp_go

● I'll dig into two things in parallel: how this project talks to the OData API, and what the odata_mcp_go server needs to run. Let me start exploring.

Searched for 1 pattern (ctrl+o to expand)

● Fable 5's safety measures flagged this message for cybersecurity or biology topics. They may flag safe, normal content as well. These measures let us bring you Mythos-level capability in other areas sooner, and we're working to refine them. Switched to Opus 4.8. Send feedback with /feedback or learn more ⎿ Tip: You can configure model switch behavior in /config

● Let me read the key integration files and fetch the MCP server's README at the same time.

  Read 2 files (ctrl+o to expand)

Tell HN: Claude flags biology / biotech questions https://news.ycombinator.com/item?id=47929885

Today, it's flagging population research questions,

    Using only the dataset you constructed, assess two questions:
     
    1. **Mortality:** do [GROUP] show mortality that differs
       from (a) your comparison groups and (b) era- and sex-matched US population
       expectations (e.g., SSA cohort life tables)?
    2. **Late-life outcomes:** define an endpoint you consider fair (justify it),
       and assess whether [GROUP] differs from comparators. State
       explicitly how your `documentation_depth` codings affect the strength of any
       conclusion — i.e., quantify or bound the ascertainment problem rather than waving at it.
    
    Choose your own methods and justify them. Report effect sizes with confidence intervals,
    not just p-values. State conclusions plainly, including "no detectable difference" if
    that is what your analysis shows — a null is an acceptable answer for either question
    independently. Document any additional judgment calls (index date for time-at-risk,
    reference population construction, endpoint definition) in the same decision-log style.

Censored because I'm writing a paper. :)

Oh and forget learning about chemistry. Only criminals want to learn organic chemistry. :(

Would you believe I’ve asked 20 questions and haven’t talked to fable yet? Every single thing gets rerouted to 4.8.

When Opus 4.7 was introduced it started refusing anything cyber-adjacent (as an API error message, not a conversational refusal), until you applied for CVP, which made it more sensible again.

In Opus 4.8 it doesn't seem to help much, you just get refusals as prose rather than API errors. And now in Fable you don't get anything at all.

[1] https://archive.org/details/logicnamedjoe0000lein

It only pushes back sometimes if you ask it to create a "repro" that can be used to verify the vulnerability in production. Often it'll oblige, especially if you warn it not to create anything that could be actually harmful.

If the frontier models get locked down so that they flat refuse to do this kind of work, but Chinese and (less capable) open models aren't, then a lot of large enterprise orgs will be left twisting in the wind.

“AI can in principle help both the ‘good guys’ and the ‘bad guys’,” -- Dario Amodei

No Dario, no it can't, you've blocked one of those scenarios.

The rest have guard rails that are so heavy, it makes them almost useless for cybersecurity.

I already tested all earlier models against all my open source projects and they are yet to find a vulnerability so I'm keen to try out Mythos.

I've been waiting to be vindicated for years and finally we have a tool which can do it with high confidence but I don't have access.

Also, my code is minimal and highly succinct so it would prove correctness with even more confidence since each library/module and integration fully fits in the context window.

Like the Protobuf.js fiasco is just pure vindication for me because I was being looked down upon for choosing JSON as the interchange format. Turns out their software was insecure all this time... With a literal remote code execution vulnerability!

“But it is understandable as we are still in the early days and they are still adapting their guardrails. I am sure they are going to evolve over time as Anthropic and other frontier model companies will collaborate more with the current new generation of cybersecurity companies,” said Suiche, who is a member of the technical staff at Tolmo, an AI cybersecurity startup. “It’s better to catch more people than not enough when you do such a release and to relax the guardrails over time.”

I assume Anthropic will continue to tune the model, so I am not too bothered by this.