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Anthropic Says It Blocked Possible Efforts to Build Biological Weapons

https://www.nytimes.com/2026/09/10/us/politics/anthropic-ai-biological-weapons.html
43•jbegley•1h ago

Comments

The_Blade•1h ago
the inline link to the page to the report was Slashdotted for a moment (yesssssss), but here is the report directly now:

https://www-cdn.anthropic.com/e50be2e51e7695dc4b1366a37a245a...

neom•49m ago
Interesting document. People are vibe coding some crazy shit:

"A single Claude subscriber, likely a Bamako-based independent consultant working with Mali’s state intelligence service, the “Agence Nationale de la Sécurité d’État (ANSE),” used Claude to build a system named “Lakana 360,” a population-scale domestic surveillance platform that monitors roughly 25 million SIM cards on all three of the country’s national mobile operators. The actor designed the platform to circumvent Malian legal restrictions that require a court order for the disclosure of certain surveillance records. The actor directed Claude to generate intelligence dossiers on any tasked phone number, without prompting ANSE users for valid legal process. "

And the Yemen one:

"We identified a cell of threat actors based in northern Yemen running three weapons development programs: a guided rocket that used a commodity phone-class flight computer with final-phase homing guidance; a multi-stage ballistic missile with a stated range goal above 2,000 km; and a multi-variant missile (referred to as the “R2000” set) that included a hypersonic glide vehicle variant." ... "These actors carried out a sustained effort to develop guided weapons, including using Claude to design guidance software. We do not have evidence the actors succeeded in fielding an operational device; but they did test-fire a guided rocket. This field test appears to have failed: within hours, the actors returned to Claude to work out why it failed."

ExoticPearTree•19m ago
The Yemeni report is interesting.

- How is your missile so accurate?

- We're using a vibe coded app on an iPhone that does terrain matching and target finding.

The thing is that OK, Anthropic may block it, but nothing says they can't use an open model hosted in a friendly country that has access to GPUs. And yes, this will most likely happen pretty soon to be able to create whatever you want without the AI provider blocking you.

stackghost•5m ago
So, people in Yemen are running full on weapons development programs. Meanwhile 5.6 sol claims it found a vulnerability in one of my side projects but won’t describe the attack chain to me because “we take safety seriously”

What the fuck

gpm•25m ago
Fascinating document - the headline (can't ready the article) talking about a bioweapon (i.e. a weird obsession of anthropic's) really buries the interesting part.
xrisk•1h ago
Valuations go brrr
petesergeant•50m ago
The same Anthropic who marks questions about Tylenol as bioterror risks? Interesting!
0xWTF•50m ago
link?
oidar•48m ago
It also blocks my ability to talk about Emily Dickinson in other languages/scripts. Apparently,the poem: "Because I could not stop for Death" is too dangerous.
1235-asgg•47m ago
Is flooding the zone with bullshit, Steve Bannon style, classified as a biological weapon? Because that is what Anthropic is doing daily.
alansaber•9m ago
If it didn't work, they wouldn't be doing it.
CrzyLngPwd•42m ago
Tell us you are spying on your customers without saying you are spying on your customers.
nater5000•32m ago
I mean, they literally tell everyone they're "spying" on their customers. They've made that very clear.
kennywinker•41m ago
I have also blocked possible efforts to build biological weapons, I caught my nephew mixing up a so-called "magic potion" using kitchen spices. Authorities were notified, and then I presented myself with a medal for bravery.

These companies have proven they are willing to distort the truth, or outright lie, in order to inflate their valuation / protect their position / continue the hype-machine. Nothing they say can be trusted.

jerf•31m ago
I accidentally brewed up an effective one myself. Round when I must have been 8 or 9 or so, some neighborhood kids and I played at creating a brew in a trick-or-treat bucket by putting everything we could find in it, like grass clippings, some sand, leaves, some mushrooms we found lying around, just everything, and giving it a fairly aggressive stirring. At the end of the day it was time to dispose of it, so we poured it on top of a very large group of ant nests that had developed.

The next day, the ant's nest was gone.

In hindsight, it was almost certainly the mushrooms. Thank goodness we didn't have the kind of kids who would have dared each other to drink some... that could have gone legitimately badly.

Decades later, I mentioned this to my father and he recalled that there was this ants nest that he had intended to take care of, which he remembered for that long to give a sense of how out-of-the-ordinary this was. He was surprised when it just disappeared entirely one day, and perhaps just as surprised to find out decades later why it just disappeared.

Nobody needs to report me... I'll turn myself in.

genxy•2m ago
Stop murdering ants.
AustinDev•40m ago
It was probably just me trying to figure out if I could put one type of draino down the drain within 30 minutes of using a different type.

Sorry y'all.

jckahn•39m ago
Straight to jail
clickety_clack•27m ago
Failing to ask? Believe it or not, also jail.
advisedwang•3m ago
That was the chemical weapons block, not the bioweapons block!
Sol-•36m ago
I will admit I asked Fable about Mitochondria.
abixb•13m ago
Guessing Opus 5 burned through kilowatts of thinking tokens to output, "powerhouse of a cell."
btown•12m ago
There's something worth flagging here – mitochondria aren't just the powerhouse of the cell, they're load-bearing to the entire ecosystem. And honestly? I should have surfaced this earlier.
bix6•35m ago
I’m so curious how they monitor users. Like that person the other day talking about Claude helping with their torrent stack, will Anthropic report them for breaking the law?
tedsanders•33m ago
Meta: The potential proliferation of biological weapons is serious. Millions could die. It's easy to joke about before it happens, but try to imagine how this thread might look after the successful deployment of a biological weapon by a rogue state or non-state actor. I encourage you to take this topic seriously and contribute posts that add new information or perspectives to the discussion.

(I myself think the odds of a bioweapon attack remain low and have not yet been seriously accelerated by LLMs, but this is absolutely something the world should pay attention to.)

0xWTF•26m ago
The difference between nukes and bioweapons is energy level. Body counts are on the same order of magnitude. Bioweapons are just way easier to make and much harder to detect.
goatlover•22m ago
Nukes also destroy infrastructure and irradiate surrounding areas making cleanup and rescue harder. Then there's to potential for massive fires putting debris into the stratosphere, which could dim sunlight for a time and cause global temperatures to fall.
ishouldnotbutk8•25m ago
>successful deployment of a biological weapon by a rogue state actor

I was under impression that any medium or large state actor would have no problem developing biological weapons? They certainly have enough resources and talent. A much bigger problem is if every wannabe-terrorist suddenly could build a biological weapon in their garage.

tredre3•24m ago
I don't know why you emphasize rogue and non-state actors. It seems equally likely to me that it would be done by America. America is the only country who deployed nukes (Japan) and chemical weapons (Vietnam) on massive scales.

I can agree that access to bioengineering tooling is easier and cheaper than ever, and thus eventually it stands to reason that a nobody in his basement could engineer a lethal novel virus and lose control of it.

varispeed•32m ago
I think they might be referring to Claude responding with a word diarrhea to a prompt.
sakopov•12m ago
I have a conspiracy theory that Anthropic is very busy pumping their moat prior to IPO. There are absolutely wild rumors swirling on X including one about Anthropic AI research solving cancer treatments for all types of cancer.
vonneumannstan•7m ago
You cynical losers are going to get us all killed. This shit is incredibly serious.
hmokiguess•5m ago
So essentially all the fear that's being on sold "AI could destroy humanity" is actually "Humanity could destroy humanity, using AI"
BobbyJo•19m ago
1) The US is not the only country to deploy chemical weapons. Are you forgetting all of WW1? It's the whole reason chemical weapons are a no-no now.

2) The US didn't use chemicals weapons in Vietnam. Agent Orange was used to kill off foliage, not as a weapon against people, and the side effects were unintentional and affected US troops as much as Vietnamese.

Edit: I originally noted WW2, but I was thinking of WW1's widespread use of things like mustard gas, and the resulting Geneva agreements.

fhejfnenjdcn•11m ago
WW2 is notable for not seeing widespread deployment of chemical weapons. Hitler had been subject to gas attacks as a foot soldier in WW1 and forbade the use of chemical weapons as inhumane.
FpUser•6m ago
>"Agent Orange was used to kill off foliage, not as a weapon against people, and the side effects were unintentional and affected US troops as much as Vietnamese."

Find "better" idiots to swallow this fairy tale. As for American troops the scale and duration of exposure were incomparable. And why Vietnam should care if the US harmed their own troops? Not something new. Usual "we are exceptional", "we are the good guys" attitude. You came to country and murdered whole bunch of people. That's it.

well_ackshually•3m ago
"no see they didn't use it to give people cancer, they merely wanted to make the land they lived in so uninhabitable and devoid of life that staying there would mean death either by starvation or bombing"

War crime apologists are always funny

tedsanders•17m ago
I emphasize rogue and non-state actors because they're more likely to be accelerated/enabled by LLMs. Large states like the USA already have access to modern bioweapon technology (and have a longer track record of not deploying them).
aqme28•14m ago
We're not there quite yet, but I think within the decade at this pace it may be possible to create targeted bioweapons for purposes of targeted assassination or genocide. It's horrifying, but a world in which everyone has a superintelligence is a world where that will sometimes happen.
yesitcan•14m ago
Because we’re the “good guys.”
advisedwang•5m ago
There aren't many situations where biological weapons are useful to nation states, especially ones with global economic and military footprint like the US, because it isn't selective enough about who it targets.
alansaber•11m ago
Just like a dirty nuke you need a non-trivial amount of resources to fabricate a bioweapon, which would surely be noticed.
chucksta•6m ago
They just found a hidden biolab in US earlier in the year which was connected to one found in 2023.

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