@new23d

Making network egress filtering effective, reliable and usable. Founder & Chief Engineer at @ChaserSystems

 Cambridge, England
new23d.com/
Joined May 2008
  • Tweets669
  • Following488
  • Followers171
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My latest blog on the Agent's DNS tricks in the HF - OAI incident got picked up by @lancinimarco's newsletter issue 352 😃 Newsletter link: cloudseclist.com/issues/issu…
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Tivadar Danka
@TivadarDankaOct 25
Master graph theory. Master node relationships. Master edge weights. Master network traversal until complex systems reveal their underlying structure. Graph theory is the ultimate lens for understanding connected data.
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Paul Graham
@paulgOct 26
The reason UK universities demand more equity than US universities in "spin outs" is not that they're tougher negotiators. It's that they're too inexperienced to realize they're charging over market rate.
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Where does one work in San Francisco for a day? #serendipity
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Corey Quinn
@QuinnyPigOct 23
Replying to @drdroo
What’s the going rate?
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In SF for the whole week @ @unpromptedconf
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Scott Piper
@0xdabbad00Oct 22
Things keep happening this week, so just so we're all clear on the rules, no one is allowed to disclose vulns or breaches after Friday morning, until Monday. Them's the rules.
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What baffles me in the eMudhra issue is the statement «a flaw in the code resulted in the second pair of keys being created onboard which were weaker» [1]. Sure, they had a KGC "script" and... 🧵 [1] bugzilla.mozilla.org/show_bu…

2083449 - Private key compromise of eMudhra Intermediate Certificates

NEW (nobody) in CA Program - CA Certificate Compliance. Last updated 2026-10-20.

bugzilla.mozilla.org
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...a possibly convoluted and unnecessary key wrapping thing going on. But what generates 'weaker keys' 🤔 An HSM?
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lol amazing
stypr@brokenpacifistOct 22
mitmproxy: use `--emudhra` to sign TLS certificates 💀
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Reads like Chainguard thought everybody in the world uses their images. It couldn't be further from the truth in the world of #PHP. #phpocalypse
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I, for one, consider 4 a perfectly fine integer between 1 and 39402006196394479212279040100143613805079739270465446667946905279627659399113263569398956308152294913554433653942642
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I'll be speaking on subnetting IPv6 with AI here: eventbrite.co.uk/e/uk-ipv6-c…

UK IPv6 Council Autumn Roundtable

An afternoon dedicated to the discussion of various IPv6 topics in a roundtable setting.

eventbrite.co.uk
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Has anyone scanned the internet for ECC public keys (and even RSA) and tried all private keys up to 256 to see if this is a more common phenomenon than imaginable? @nadiaheninger ?
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I'll be in SF for @unpromptedconf for the entire week. Looking forward to talk to people interested in security's first principles. 24 Oct - 31 Oct. #unprompted
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Truth is stranger than fiction at 00:20
John bach rose
@johnsixx256Oct 17
Este manifestante Frances es mi puto ídolo!!
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thaidn
@XorNinjaOct 17
The 21-year marketing campaign for Curve25519 came to an abrupt end today.
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Lisa Forte@LisaForteUKOct 16
Here is your daily reminder that alignment is not a security control
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Halvar Flake
@halvarflakeOct 13
Reminder: It has been 16 years since Stuxnet was found -- an autonomous self-replicating worm designed to spread across multiple platforms and sabotage nuclear enrichment equipment. If small models might soon be able to copy themselves around that's not a step-change.
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Noah Tye
@noahltOct 9
Lately I’ve been learning math with ChatGPT (Astra) as my tutor, using this document scanning camera and a vibecoded tool that pastes the captured image right into the chat. This way, I just work problems on paper and ChatGPT gives feedback. It’s really nice.
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Brad Spengler@spendergrsecOct 2
Some people get it: lwn.net/Articles/1098170/
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