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BlueHat IL 2023 - David Weston - Default Security

Microsoft Israel R&D Center · 46.6K views · 2023-04-19 · 54:35

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Overview

David Weston's BlueHat IL 2023 talk traces the evolution of Windows security and previews Windows 11 and hardware advances. It ends with upcoming changes such as Rust in the kernel and fonts, signed binaries and adminless Windows.

On Hacker News

HN uses it as the primary source for Microsoft's Rust adoption and its reasoning on TPM and security requirements.

Recommended by 3 HN people across 2 months · HN mentions 2023–2025

Topics

Security & hackingOperating systems & kernelsC, C++, Rust, Go & systems languages
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windows 11rusttpmmemory safetymicrosoft

What people said

Hawxy · 2025-02 · Recommendation

> Security There's a pretty interesting video from 2023 that goes through much of Microsoft's thoughts around Windows security. It flew under the radar unfortunately: [VIDEO]

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senectus1 · 2023-04 · Recommendation

[VIDEO] This is the announcement video. its about an hour long but much of it is very interesting. "Adminless windows" sounds very interesting.

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nindalf · 2023-04 · Recommendation

Link to the talk - [VIDEO] (timestamped to the part about Rust) The speaker covers a bunch of areas and the final part of the talk (around 10 minutes) is about Microsoft introducing Rust in some self-contained areas in Windows. Some highlights: - Their focus is on "killing bug classes". More context in this post by Microsoft Research from 2019 - A proactive approach to more secure code. - They want to do this with memory safe languages, CPU architectural changes and safer language subsets. This talk focussed on memory safe languages, specifically Rust. - First area they've introduced Rust in - a cross platform rewrite of a font parser called DWriteCore. The team reported that parsing was "incredibly easy". Font shaping performance increased by 5-15% compared to the C++ version. - It took about 2 devs working for half a year to complete this. The speaker says this is pretty good value for an area that is notorious for security bugs. - Second area is the REGION data type in Win32k GDI. Currently in consumer Windows, disabled by feature flag. Will be enabled in insider builds soon. Performance has been good, some small wins for the Rust version. - There is now a Windows SysCall implemented in completed safe Rust. TLDR - Rust is inside the Windows Kernel, will be enabled widely soon.

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Sources

Video by Microsoft Israel R&D Center, played through YouTube.

Data and selection notes

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