Catalin Visinescu

Technical Director @ NCC Group
(Hardware and Embedded Services)

[kernullist @kernullist]

Wrote up some notes on PCIe DMA cheats — how the protocol stack works, how IOMMU translation and bypass techniques interact, what FPGA hardware the attack surface looks like, and how detection stacks up from config-space fingerprinting through TPM attestation.
https://t.co/gjQn6XWwFk

[OpenAI @OpenAI]

Today, we share a breakthrough on the planar unit distance problem, a famous open question first posed by Paul Erdős in 1946.

For nearly 80 years, mathematicians believed the best possible solutions looked roughly like square grids.

An OpenAI model has now disproved that belief, discovering an entirely new family of constructions that performs better.

This marks the first time AI has autonomously solved a prominent open problem central to a field of mathematics.

[Alex Plaskett @alexjplaskett]

Here’s the role, should be able to hire in UK/Spain (remote) currently.

https://t.co/7Z6hL3vpR0

[Catalin Visinescu @cvisines]

Conference schedule #qpss26

With @againsthimself

[Catalin Visinescu @cvisines]

In San Diego, looking forward to another awesome Qualcomm Security Summit.

https://t.co/V1mJd7uusS

#qpss26

[Catalin Visinescu @cvisines]

https://t.co/hQohtrHGFs

[Annie? Rauwerda? @anniierau]

openai․com was once the personal homepage of a guy named glenn (2001), and tiktok․com was the quaint shared homepage of a couple who went from dating to married with a baby (~1998-2001). THREAD!!!

[Ananay @ananayarora]

Marcus Hutchins, the guy famous for stopping the WannaCry Ransomware, probably has the best take on Mythos doing vulnerability research

[Adam Tauman Kalai @adamfungi]

New research explains why LLMs hallucinate, through a connection between supervised and self-supervised learning. We also describe a key obstacle that can be removed to reduce them. 🧵https://t.co/6Lb6xlg0SZ

[Wil Gibbs @cl4sm]

While playing @defcon CTF Finals with @shellphish I managed to solve the ICO challenge using LLMs (GPT5 + Cursor) and almost no human intervention. You can read how I did it here! https://t.co/EcqYZdyIfV

[Catalin Visinescu @cvisines]

https://t.co/3rC7nEhhJk

[Alex Plaskett @alexjplaskett]

Finding a 27-year-old easter egg in the Power Mac G3 ROM by Doug Brown

https://t.co/l0q5UTrK5D

[TrendAI Zero Day Initiative @thezdi]

Pwn2Own Berlin 2025 comes to a close. We awarded $1,078,750 for 28 unique 0-days. Congrats to @starlabs_sg for winning Master of Pwn with $320,000. Thanks to @offensive_con for hosting, and thanks to all who participated. Can't wait to see you next year! #Pwn2Own #P2OBerlin

[chiefpie @cplearns2h4ck]

Won Master of Pwn with the team at STAR Labs👑

[Tavis Ormandy @taviso]

You can now jailbreak your AMD CPU! 🔥We've just released a full microcode toolchain, with source code and tutorials. https://t.co/4NYerRuFo1

[Ollie Whitehouse @ollieatnowhere]

Weekly summary is out..

https://t.co/3iIxtG7Yhy

[Alex Plaskett @alexjplaskett]

Breaking the Flash Encryption Feature of Espressif’s Parts by Kévin Courdesses

https://t.co/NWC0v1DoOS

[Alex Plaskett @alexjplaskett]

the magic you long to find is still in the tasks you're putting off

[Chris Hadfield @Cmdr_Hadfield]

It’s just ‘Hockey’, not ‘Ice Hockey’.

[Alex Plaskett @alexjplaskett]

Two articles which really help when trying to reverse engineer Rust binaries:

https://t.co/SRp5djf7b0 by @CheckPointSW

https://t.co/1HcfyXNCWY