Techmeme 20260514 First public macOS kernel memory corruption exploit on Apple M5 Summary

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Techmeme surfaced this May 14, 2026 story in its Techmeme cluster, and the original post is Calif’s First public macOS kernel memory corruption exploit on Apple M5.

What happened

Security firm Calif says its engineers, working with Anthropic’s Mythos Preview, built a working macOS kernel memory corruption exploit on Apple M5 hardware in five days. The claim is notable because the target was not an old or lightly defended system. Calif says the exploit ran on bare-metal M5 hardware with kernel Memory Integrity Enforcement enabled, targeting macOS 26.4.1 from an unprivileged local user and ending with root access.

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The Economist 20260425 The world wants Chinese tech Summary

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This summary covers The Economist’s April 25th, 2026 China column listed in the contents as Chaguan: Tech transfer and published under the headline The world wants Chinese tech.

The article argues that the politics of technology transfer have flipped. For decades, Western governments and companies worried that China was forcing, coaxing or stealing foreign know-how. Now many of them face the opposite problem: China has become strong enough in electric vehicles, batteries, robotics and other advanced industries that outsiders want Chinese knowledge, factories and production methods to move abroad.

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2026-05-14 Social General Briefing Summary

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Epstein abused me while under house arrest, survivor tells US lawmakers (r/news)

Alabama woman sues alleging she gave birth on prison floor as guards watched (r/news)

More than 1,000 passengers held on cruise in France after gastroenteritis outbreak (r/news)

Russian parliament passes bill allowing Putin to invade foreign countries (r/worldnews)

What are the weirdest ways you’ve heard of someone getting caught cheating? (r/AskReddit)

TIL actor Taylor Lautner married a nurse named Taylor Dome. Before their wedding, Taylor Lautner stated that Taylor Dome planned to take his surname, resulting in both partners now being named Taylor Lautner. (r/todayilearned)

2026-05-14 Social Tech Briefing Summary

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If you’re young and in CS, switch tracks (Blind)

Offers from OpenAI Anthropic and Nvidia. Which to choose? (Blind)

‘It’s like we don’t exist’: Nearly 50,000 Lake Tahoe residents face power loss as utility redirects lines to data centers (r/technology)

Software Developers Say AI Is Rotting Their Brains (r/technology)

Tech Layoff Wave Has Already Hit 100,000 Jobs This Year (r/technology)

LeetCode HARD 3721 Longest Balanced Subarray II Summary

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Quick facts

Problem gist

The input is an integer array. A subarray is balanced when the number of distinct even values inside it equals the number of distinct odd values inside it. Repeated copies of the same number only count once, so [3, 2, 2, 5, 4] has two distinct odd values, 3 and 5, and two distinct even values, 2 and 4.

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OpenAI 20260513 Building a Safe, Effective Sandbox to Enable Codex on Windows Summary

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What happened

OpenAI’s official engineering blog published Building a safe, effective sandbox to enable Codex on Windows, a post about the operating-system engineering needed to make local coding agents useful on Windows without giving them unchecked access to a developer machine.

The problem is specific to agentic coding tools. Codex runs on a user’s laptop through the CLI, IDE extension, or desktop app, while the model itself runs in the cloud. The local harness can ask the operating system to run shell commands, read files, write files, run tests, invoke build tools, install dependencies, or create Git branches. By default, those commands inherit the real user’s permissions. That is powerful enough to be useful and dangerous enough to need an OS-enforced boundary.

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Scientific American 202509 The Many Moons of Saturn Summary

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A crowded system comes into focus

Saturn used to look like a planet with a few dozen known moons and one spectacular ring system. The rings still dominate the view, but the moon count has changed dramatically. In this Scientific American Q&A, senior news reporter Meghan Bartels talks with astronomer Edward Ashton, whose work helped push Saturn’s official satellite tally to 274. Ashton and his collaborators have identified 192 of those moons, most of them small, faint objects only a few kilometers across.

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The Economist 20260425 Chinese satellites over the Middle East Summary

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This summary covers The Economist’s April 25th, 2026 China article listed in the contents as Chinese satellites over the Middle East and published under the headline Offering alternatives.

The article argues that China’s rapidly improving commercial satellite industry is changing the politics of wartime intelligence. During the conflict involving Iran, Israel and America, Chinese satellite firms have released images of military sites, damaged infrastructure and deployed weapons at a moment when American providers have become more constrained. That has given China a way to help America’s adversaries indirectly while advertising a fast-maturing space industry.

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The Pragmatic Engineer 20260512 Revisiting No Silver Bullets in the age of AI Summary

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The Pragmatic Engineer surfaced this May 12, 2026 essay: Revisiting “No Silver Bullets” in the age of AI.

The old question returns

Gergely Orosz uses Frederick Brooks’s 1986 essay “No Silver Bullet” as a way to test the AI coding moment against a harder standard than demo output. Brooks argued that no single technology or management technique would create a tenfold improvement in software productivity, reliability, or simplicity, because the hardest parts of software are bound up with complexity, judgment, coordination, and changing requirements.

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2026-05-13 Social General Briefing Summary

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US inflation jumped to 3.8% in April (r/news)

Grocery prices jumped more in April than they did in nearly four years (r/news)

CIA escalates secret war on cartels with deadly operations inside Mexico (r/worldnews)

What famous person chose to step away at the height of their fame? (r/AskReddit)

TIL about firefighter Donald Herbert. After lapsing into a coma following a firefighting accident he awoke a year later unable to recognize friends or family. He then lapsed into a minimally conscious state for over 9 years. Miraculously, he awoke again and his first question was about his wife. (r/todayilearned)

Why don’t we get a discount for using self-checkout? (r/NoStupidQuestions)