AI Summarized Hacker News
Front-page articles summarized hourly.
ShinyHunters claim they breached Rockstar Games’ cloud data (via Snowflake) using Anodot and threaten to leak a large data set unless paid by April 14. Rockstar confirmed a limited breach of non-material company information from a third party, with no impact on players or operations. The data allegedly includes contracts, financial documents, and marketing plans, not passwords or personal player data. This echoes Rockstar’s 2022 GTA 6 leak, though involving different attackers and data.
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Postgres-backed job queues struggle with MVCC dead tuples when autovacuum can’t keep up amid overlapping long-running queries. Even with autovacuum tuning, the MVCC horizon can stay pinned, causing index bloat and degraded throughput. Traditional timeouts are blunt; they don’t distinguish workloads or cap concurrency. PlanetScale’s Database Traffic Control (Insights) adds Resource Budgets to throttle targeted queries (eg, analytics) by server share, per-query time, and max concurrent workers. In testing, capping analytics to one concurrent worker (800 jobs/sec) kept the queue healthy and minimized dead tuples, unlike unthrottled workloads. VACUUM still matters; Traffic Control helps manage it.
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Phone Trips is a fan-archived collection of hundreds of old phone-tripping and phreaking recordings from the 1960s–1980s, curated by Mark Bernay and Evan Doorbell. The site now serves all recordings as mp3s viewable in modern browsers, with download options and explanations. It catalogues dozens of regional tapes (Washington, Oregon, California, NC, VA, etc.), samples of conversations, educational talks, and historical switching sounds. Evan Doorbell maintains a YouTube channel with updated narrated tapes; the page also offers background on the creators and the project.
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AISLE tests Anthropic Mythos vulnerability claims by running them against small open-weight models. They find AI cybersecurity capability is jagged and does not scale with model size; the moat is the system, including targeting, validation, triage, and maintainer trust, not the model. Across three tasks—OWASP false-positives, FreeBSD NFS, OpenBSD SACK—small models sometimes outperform frontier models, and results vary by task. Mythos validates the approach but is not determinative; defenders can deploy cheap models and robust scaffolds today, with the main bottleneck being security engineering and workflows.
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Advanced Mac Substitute is an API-level reimplementation of 1980s Mac OS that runs 68K Mac applications in an emulator without ROM or system software by replacing the OS and launching directly into apps. It uses a 68K emulator with an SDL2-based frontend, built for POSIX-like systems, and can run classic 1984 apps and games (e.g., Amazing, Solitaire, Missile, IAGO). It supports 1-bit graphics, GrafPorts, windows, menus, and more. It runs on macOS, X11, Linux framebuffer, or via VNC; source is on GitHub. Last updated 2025-11-29.
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Surelock is a Rust library to prevent deadlocks by encoding lock state in the type system. It uses two complementary mechanisms: (1) LockSet for same-level locks acquired atomically in a fixed order, and (2) Level<N> with compile-time Level ordering for cross-level locks. A MutexKey token travels with each lock, carrying a record of what’s already held. The API is completely safe: no Result/Option, no runtime panics on the lock path, and unsafe is confined to raw mutex internals. It supports std via lock_scope and no_std via Locksmith/KeyVoucher, with no runtime dependencies.
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An essay arguing that language models function as maps of knowledge: useful compressions that can reshape the territory they describe. Using Borges and Baudrillard, it shows four stages of representation—faithful copy, distortion, absence of reality, and possible detachment—and notes we inhabit multiple stages at once depending on use. Because LM outputs vary with prompts, readers must cultivate tacit, practice-based skill to read them: when to trust, zoom, or touch the territory behind the text. The map is also an object of study; the key skill is staying aware of our changing relationship to these tools.
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The piece argues that next-gen ML and large language models will heighten annoyance and blur accountability across society. It foresees automated customer service that lies or stalls, 'fuzzy' decision tasks driven by cost-efficiency rather than accuracy, and a diffusion of responsibility as decisions are made by sprawling AI systems. It describes 'agentic commerce'—AI-driven, opaque pricing and shopping—and a widening battle over ads, fraud, and returns, ultimately pushing consumers into a complex, AI-mediated economy where accountability is hard to pin down.
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Part 1 of The Iron Core traces six decades of airline booking infrastructure. SABRE (1964) on IBM mainframes with TPF is a transaction runtime—not Unix—delivering ~10k TPS (50k in fare sells) with sub-100 ms latency. GDSs like Amadeus evolved but kept the same data models and cryptic interfaces. IndiGo uses Navitaire for high-volume, low-cost ops, complicating interline re‑accommodation. A 30‑second booking crosses six boundaries (MakeMyTrip → Amadeus → Air India Altéa → BSP → e‑ticket), linked by a six‑character PNR. Takeaways: fitness for purpose; convergent evolution; migrations are expensive.
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Memory access patterns dominate performance. The author benchmarks fixed-size linear blocks (32 B to 2 MB) across 1–64 MB working sets and random vs. repeated layouts to bound needed contiguity. Key takeaways: 1 MB blocks suffice for basically any workload of this kind; 128 kB blocks are enough if per-byte costs are around 1 cycle or more; 4 kB blocks suffice when costs exceed ~10 cycles/byte. Across three kernels (scalar_stats, simd_sum, heavy_sin), peak throughput varies by kernel, with simd_sum needing ~1 MB blocks for peak and heavy_sin performing well even at small blocks. No universal rule; contiguity helps, but required block size depends on per-block costs. GitHub code/results.
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Luca Quartesan traces the rise of neural networks in Evolve’s rendering engine. Beginning in 2021 with Neural Materials trained offline in PyTorch, the team built a cross‑platform inference pipeline in compute shaders, and later added runtime training with Neural Radiance Caching. They describe the push to portable, vendor‑neutral acceleration via Cooperative Matrix and Cooperative Vector (Vulkan/DirectX), addressing divergent per‑pixel networks by grouping queries per material, and by using per‑thread long vectors stored in VGPRs. They contrast plain versus optimal matrix layouts (MulOptimal, OuterProductOptimal) and the necessary data conversions. DirectX evolved into Linear Algebra; Vulkan/KHR continues.
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South Korea rolled out universal basic mobile data access: about seven million subscribers get unlimited downloads at 400 kbps after data caps. SK Telecom, KT and LG Uplus signed on. The plan aims to guarantee basic telecom rights and restore telcos’ social license after high-profile security lapses. The government also seeks low-price 5G plans, expanded data/calling for seniors, and better subway/train Wi‑Fi, plus research support for AI-network advances. Telcos are urged to invest in networks beyond datacenters to make AI services accessible.
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UI for the political-satire game "Presidential Panic: Hormuz Havoc." It shows WK 1/30, oil price, and metrics: approval at 40% (needs 50%), personal enrichment 0, grift 0, score 0. Global/human and AI-assisted leaderboards, action choices, score verification, and live breaking-news prompts. A prompt asks the president to state their name with options to continue or skip.
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Bitcoin miners are losing about $19,000 per BTC as production costs rise to $88,000 per coin while BTC trades near $69,200, according to Checkonchain. About 21% loss per mined BTC. Costs rose due to energy prices and Middle East tensions, including the Strait of Hormuz, pushing electricity costs higher and hashrate lower, with slower block times and a 7.8% drop in network difficulty. Miners are selling more BTC to fund operations and moving into AI/HPC for steadier revenue. Public miners like Marathon and Cipher are diversifying. If BTC stays below $88k, the miner exodus continues, pressuring the spot market.
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Cirrus Labs announced it will join OpenAI as part of the Agent Infrastructure team (April 7, 2026). Since 2017 it has built engineer-focused tooling, including a cross‑platform SaaS CI/CD in 2018 and Tart for Apple Silicon (2022). With agentic engineering rising, the move aims to advance tooling for both human and agentic engineers. Cirrus will relicense Tart, Vetu, and Orchard to a more permissive license and stop charging licensing fees. Cirrus Runners will not accept new customers; Cirrus CI shuts down on June 1, 2026. Thanks to all users and contributors.
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Guardian's investigation shows Polymarket, a crypto-based prediction market, turning war into bets as thousands wager on Ukraine, Iran, and other events. In Discord, traders discuss edges, arbitrage, and even attempts to influence reporting or maps (e.g., ISW's Kostyantynivka map). Bets include whether Russia will seize Kostyantynivka, how a ceasefire will unfold, or if Iran will strike Israel. Settlements are decided by a crypto- UMA holders group, raising concerns about manipulation and opacity. Critics call it immoral; regulators push for oversight. Proponents argue it provides a rapid ‘truth signal’ and data for markets.
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Indoor air is filled with microplastics, mainly from textiles and furnishings. Concentrations indoors exceed outdoors, and people may inhale tens of thousands to millions daily; babies may be higher. Most exposure is indoors; dust carries fibres that can reach the lungs and cause inflammation, though full health effects remain unclear. To cut exposure: wash fewer clothes and in full loads, prefer natural fibres, and dry outside when possible; install HEPA filters and ventilate; vacuum with HEPA and damp-wipe surfaces. Reducing microplastics requires changes at home and broader plastic-use reductions.
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DIY Spectrum is an Arduino-powered spray-paint mixer that lets artists mix colors on demand from four base cans (red, yellow, blue, white). Instead of a traditional mixing channel, it uses a high-speed rotary pinch valve and pulse-width-like control: valve open times (30–250 ms) are sequenced to produce color ratios, with backflow eliminated by a normally closed valve. A 1 mm tube and flow turbulence mix the paint before aerosolization. The system can generate hundreds of colors (theoretically ~4,096) for under $150 in parts, with build docs online.
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Artemis II, Liz Plank writes, is 'competency porn' that the public is starving for. Four astronauts go farther from Earth than any humans have before, and their competence, quiet eloquence, and shared humanity offer relief after years of political fear and bracing. Wiseman, Koch, Glover, and Hansen are highlighted: Koch becomes the first woman in the mission area near the Moon; Glover is the first Black person beyond LEO; a crater is named Carroll Crater for a NICU nurse. Awe creates the overview effect, broadens thinking, and builds resilience. Hope follows.
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Passive radar uses existing broadcasts (FM, DVB‑T) with no transmitter. It’s bistatic: transmitter and receiver apart; the receiver compares the direct signal with the reflected echo to measure Doppler shift (speed) and delay. The delay maps to an ellipse with transmitter and receiver as foci; multiple transmitters/receivers allow intersecting ellipses to locate targets. Advantages: no transmitter or license, low cost, covert, scalable. Disadvantages: depends on available signals, lower precision, complex processing, and usually no altitude with a single receiver; range resolution is limited. It can detect stealth under some conditions, but with caveats.
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