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AI benchmarks gamed by exploits & iPhone passcode broken by update - Hacker News (Apr 12, 2026)

AI benchmarks gamed by exploits & iPhone passcode broken by update - Hacker News (Apr 12, 2026)

Published 2 months, 1 week ago
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Today's topics:

AI benchmarks gamed by exploits - UC Berkeley researchers show popular AI agent benchmarks can be reward-hacked via environment leakage and weak validators, undermining leaderboard trust and safety claims.

iPhone passcode broken by update - A student reports an iOS update blocks a Czech diacritic in a lock-screen passcode, highlighting fragile input methods, encryption constraints, and data-recovery pitfalls.

JVM flags database for OpenJDK - An updated VM Options Explorer catalogs OpenJDK 11 HotSpot flags with defaults, deprecations, and vendor differences—useful for performance tuning and upgrade planning.

Reversible computing and energy limits - A piece connects Landauer’s principle to reversible computation, explaining why reducing information erasure could lower energy use even if today’s hardware is far from the limit.

Hard tech bets after Intel - Pat Gelsinger, now backing hard tech startups, outlines looming compute bottlenecks—memory, networking, energy—and why heterogeneous systems may shape the next AI era.

Design for skimmers, not readers - The “Miller Principle” argues people rarely read docs, UI text, or long messages, pushing teams toward resilient product design and communication that survives skimming.

Lean software ops without VC - A developer argues for ultra-lean infrastructure—simple deployments, low burn, pragmatic tooling—so profitable software can scale without constant fundraising pressure.

Maintenance as engine of progress - Stewart Brand reframes maintenance, repair, and precision as drivers of scientific and industrial advances, shaping how institutions and cultures sustain innovation.

Debating history’s biggest ideas - A blog’s chronological ‘greatest intellectual achievements’ list—Shannon, Darwin, computation, and more—sparks debate about what truly counts as a field-defining breakthrough.



-VM Options Explorer updates searchable catalog of OpenJDK 11 HotSpot JVM flags
-Blogger Compiles and Debates a Canon of History’s Biggest Intellectual Breakthroughs
-Pat Gelsinger on Post-Intel Investing, 10,000x Inference Gains, and the Next Phase of Moore’s Law
-Alex Miller’s ‘Miller Principle’: Assume People Won’t Read Your Text
-Phyphox app showcases smartphones as tools for physics experiments
-How Toffoli Gates Enable Universal Reversible Computing
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