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Culture War Roundup for the week of April 6, 2026

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we have used Claude Mythos Preview to identify thousands of zero-day vulnerabilities (that is, flaws that were previously unknown to the software’s developers)

I wonder if Anthropic is really this naive.

Known to the NSA does not equate to known to the devs of the relevant software, quite the opposite. I don't see why you should criticize Anthropic for saying nothing on the topic of state level actors, especially when they're still on contract for providing services to the DOW.

Agreed, I think the median 0day the NSA exploits is one they found or bought and not one which they made some US company insert on purpose.

That being said, I think that it would be overly naive to suppose that a big US company with ties to the USG stumbles on a treasure trove of 0days and decides that obviously they will report all of them, rather than keeping a few choice ones for the spooks.

Even if this was their intent originally, obviously the intelligence community has moles and ways to coerce cooperation. "This is a matter of national security!!11", literally convinced the Americans to let them torture prisoners on the record. Few companies would be foolish enough to trust the court system to protect them from their ire.

It occurred to me that maybe the Iran attack happened when it did to burn a bunch while they still could but that might be over determined.

I think the median 0day the NSA exploits is one they found or bought and not one which they made some US company insert on purpose.

You're probably correct, but don't forget about the (probably small, but not null) class of exploits that they simply trick US companies into inserting. The NSA has a wide range of strategies. They paid RSA to use their exploitable Dual_EC_DRBG, for instance, but apparently that was mostly to buy enough credibility to get it called "the standard" and adopted freely by other crypto companies too.

Even their work with DES was a mix of white-hat (they knew about a vulnerability and pushed for changes that they secretly knew would eliminate it) and black-hat (they pushed to drop the standard key size from 64 to 48 bit, then settled for 56, because they knew they had the compute to brute-force those) security, and the only "made some US company insert on purpose" there was legislative, for a brief period in the late 90s when companies were only allowed to export encryption software with 56-bit or shorter keys.

The NSA probably, from time to time, has discussions with the devs of the relevant software on the subject of when to patch unknown-to-the-public vulnerabilities.

Of course, to your point about their work with the DOW, it's quite likely that Anthropic is well aware of this because they are one of the relevant organizations.

But if not, the thought of them turning loose MYTHOS and it immediately turning around and blowing up the NSA's zero-day horde is extremely funny. And since apparently this was automated and allegedly submitted a large number of such patches, it seems pretty plausible this in fact occurred.

I genuinely think that their actions are more likely to represent a divergence of interests with the NSA, which isn't that surprising given recent events. I would be very surprised if they found every zero-day that the NSA already knows, but this probably doesn't make them happy. Anyway, now that Mythos is out of the bag, most (intelligent) devs are going to be giving their code closer scrutiny, regardless of whether they have access or not. Arguably, they should have started last year.