Hacker News: theolivenbaum

New comment by theolivenbaum in "Guest-to-Host KVM Escape (CVE-2026-99999) Critical"

theolivenbaum — Fri, 16 Oct 2026 23:54:36 +0000

Technical write-up: https://pwn.ai/blog/pwnescape

New comment by theolivenbaum in "Once Claude can measure something, it can make it faster"

theolivenbaum — Wed, 23 Sep 2026 21:35:54 +0000

You're missing the point where: in complex systems, sometimes optimizing code is both a high effort undertaking, and can totally not pay off. Having done hundreds of such exercises on our software over the years, it's liberating to have an idea of how to make something faster, being able to validate it without the fear of having to throw it all in the trash if it fails after days of work. What is still important is being able to provide proper guidance - we even built new tools to allow an AI agent to analyze memory usage in more depth, and instructions on how to benchmark in cloud environments where shared CPU usage and VM reallocation happen all the time and confuses the AI all the time with measurements

New comment by theolivenbaum in "What's in a PowerPoint File?"

theolivenbaum — Sun, 23 Aug 2026 04:18:28 +0000

They added a whole set of skills and python scripts for interacting with office files using libreoffice headless, it's not writing the XML files directly

New comment by theolivenbaum in "Google copybara: moving code between repositories"

theolivenbaum — Wed, 01 Jul 2026 08:15:48 +0000

Wild times when one can go from a HN post about an interesting open source code to a port to a new language in a matter of hours (wip, but almost complete: https://github.com/theolivenbaum/copybara)

New comment by theolivenbaum in "Microsoft admits Windows 11's dedicated Copilot key breaks certain workflows"

theolivenbaum — Mon, 18 May 2026 11:59:31 +0000

For me it was even worse than that. One laptop has copilot blocked by policy, and it shows a blocking modal every time you press the key by mistake

New comment by theolivenbaum in "Show HN: Red Squares – GitHub outages as contributions"

theolivenbaum — Wed, 06 May 2026 12:03:12 +0000

If I remember correctly the status page was not precise before the acquisition - so take with a big grain of salt the 100% pre-acquisition values

New comment by theolivenbaum in "Microsoft is employing dark patterns to goad users into paying for storage?"

theolivenbaum — Fri, 10 Apr 2026 17:39:26 +0000

It's worse than that - the feature exists in the paid OneDrive app, it lets you scan, edit, add pages etc just like the office lens. It just doesn't save the output - scanned files just disappear in the void.

BCG's Data Warehouse Hacked – 3.17T Rows, Zero Authentication

theolivenbaum — Tue, 31 Mar 2026 23:39:36 +0000

Article URL: https://codewall.ai/blog/how-we-hacked-bcgs-data-warehouse-3-17-trillion-rows-zero-authentication

Comments URL: https://news.ycombinator.com/item?id=47594916

Points: 2

# Comments: 0

New comment by theolivenbaum in "15 years later, Microsoft morged my diagram"

theolivenbaum — Wed, 18 Feb 2026 07:44:06 +0000

Seems like this is going to be the year of AI slop being released everywhere by Microsoft. Just wish they'd put as much effort into a post morten for this one as they're doing for a diagram on a blog post https://github.com/microsoft/onnxruntime/issues/27263#issuec...

New comment by theolivenbaum in "We need more water than rain can provide: refilling rivers with desalination"

theolivenbaum — Sun, 25 Jan 2026 23:10:46 +0000

Maybe I'm not seeing it but wouldn't it be just easier to pump the river water back up instead of letting it flow on the sea?

Show HN: Library to help find memory leaks for C#

theolivenbaum — Tue, 09 Dec 2025 21:20:31 +0000

I got tired of shelling out to dotnet-gcdump to investigate memory leaks, so I made a tiny C# library that lets you trigger .gcdump captures programmatically. Useful for debugging memory leaks, taking snapshots before/after operations, or grabbing dumps automatically in CI.

Repo: https://github.com/curiosity-ai/memory-introspect

Package: https://www.nuget.org/packages/Memory.Introspect

Comments URL: https://news.ycombinator.com/item?id=46210814

Points: 2

# Comments: 0

New comment by theolivenbaum in "“ZLinq”, a Zero-Allocation LINQ Library for .NET"

theolivenbaum — Wed, 21 May 2025 04:39:35 +0000

See here for more info: https://github.com/Cysharp/ZLinq?tab=readme-ov-file#differen...

New comment by theolivenbaum in "“ZLinq”, a Zero-Allocation LINQ Library for .NET"

theolivenbaum — Wed, 21 May 2025 04:38:26 +0000

There are some minor breaking changes like the order of iteration is not always the same as the official Linq implementation, or Sum might give different values due to checked vs unchecked summing. Probably not an issue for most people, but a subtle breaking change nevertheless.

New comment by theolivenbaum in "“ZLinq”, a Zero-Allocation LINQ Library for .NET"

theolivenbaum — Wed, 21 May 2025 04:34:44 +0000

To add on that, you can define your lambdas as static to make sure you're not capturing anything by mistake.

Something like dates.Where(static x => x.Date > DateTime.Now)

New comment by theolivenbaum in "Ropey – A UTF8 text rope for manipulating and editing large text"

theolivenbaum — Wed, 15 Jan 2025 20:20:28 +0000

There's also a really nice implementation of Rope for C# here: https://github.com/FlatlinerDOA/Rope

New comment by theolivenbaum in "Building LLMs is probably not going be a brilliant business"

theolivenbaum — Tue, 26 Nov 2024 19:32:18 +0000

Specially because there are no network effects and no lock in.

New comment by theolivenbaum in "Air traffic failure caused by two locations 3600nm apart sharing 3-letter code"

theolivenbaum — Mon, 18 Nov 2024 20:51:08 +0000

Netflix did that many years ago, interesting idea even if a bit disruptive in the beginning https://netflix.github.io/chaosmonkey/

New comment by theolivenbaum in "Defending Open Source: Protecting the Future of WordPress"

theolivenbaum — Mon, 18 Nov 2024 08:47:55 +0000

What a bunch of corporate newspeak. Their demand of 8% of gross revenue in annual license fees, or >$30M for 2024, shows how much this was only about profits and not about contributing to the WP community:

"It’s important to note that a significant part of Automattic’s revenue, including any licensing revenue, is channeled back into supporting the WordPress community, as Automattic is currently contributing 3,552 hours per week to the WordPress project. This comes out to something in the order of $20M annually in salaries."

And the post then goes from defending open source to how their actions made everyone's websites safer (which, they didn't) and how you should migrate your website to their hosting solution. Despicable.

New comment by theolivenbaum in "Four dead in fire as Tesla doors fail to open after crash"

theolivenbaum — Sun, 17 Nov 2024 02:21:47 +0000

I think the original quote was "One in a million is next Tuesday": https://learn.microsoft.com/en-us/archive/blogs/larryosterma...

New comment by theolivenbaum in "DOJ sues realpage for algorithmic pricing scheme that harms renters"

theolivenbaum — Mon, 26 Aug 2024 15:26:34 +0000

Isn't that precisely what they were doing? Forcing landlords to follow the recommended prices?

"RealPage thus makes it hard for customers to override its recommendations, according to the lawsuits, allegedly even requiring a written justification and explicit approval from RealPage staff." From: https://www.theatlantic.com/ideas/archive/2024/08/ai-price-a...