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Charles Guillemet

@P3b7_

CTO at @ledger. Busy securing the blockchain revolution. Cryptography, (Hw) Security, Tech, Blockchain. Previously built the Donjon (@DonjonLedger)

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46.2K
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Posting frequency
3.7 /wk
4 posts over 6 days
Last post
3d
5 Nov 2026
Measured
8 Nov 2026
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Recent posts

🤖OpenAI just published research showing models found and developed exploits for 948 local privilege escalation (LPE) vulnerabilities in the Linux kernel, spending $1.2M in API credits. To put this into perspective: the Linux kernel powers almost all cloud infrastructure, OpenAI @OpenAI Nov 4 Our security researchers built an autonomous cyber vulnerability discovery, exploitation, and patching pipeline. In a single run with an upcoming cyber model, it validated and generated patches for 948 local privilege escalation vulnerabilities in the Linux kernel at a total API
I think the smileys represent Vitalik's mood. There's no consensus among cryptographers about that. sasha shilina @sshshln Nov 2 just when we were getting used to post-quantum cryptography, vitalik brings up post-AI cryptography. lovely
Happy Bitcoin white paper day!
2 replies·4 reposts·29 likes·3,033 views
One more thing: linux kernel critical vuln. An unauthenticated user sends a specially crafted TCP packet and takes over the machine. The fix is not available on all distros... Enjoy your weekend. 🫠 The Hacker News @TheHackersNews Oct 29 ‼️ Linux kernel TCP flaw rated 9.8 CVSS. Anthropic demonstrated an exploit that runs commands as root on servers using MPTCP. Ubuntu and RHEL still lack fixes, while Debian, Oracle and others have released patches for some versions. Details: thehackernews.com/2026/10/linux-…