Hacker News — 2026-05-16#

Top Story#

I broke AppLovin’s mediation cipher protocol A masterclass in reverse engineering where the author decrypted AppLovin’s ad-mediation traffic and proved that the network deterministically fingerprints iPhones regardless of Apple’s App Tracking Transparency (ATT) settings. By cracking a weak, unauthenticated SplitMix64 cipher, they revealed a payload of 50 device fields—including boot time, system volume, and free memory—being broadcast to dozens of ad networks, proving that the privacy controls iOS users rely on are functionally theater.

Hacker News — 2026-06-04#

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The biggest tectonic shift in the frontend ecosystem today: VoidZero (the company behind Vite, Vitest, and Rolldown) has been acquired by Cloudflare. With Vite now powering basically everything from Astro to React Router and pushing 129M weekly downloads, Cloudflare is pledging a $1M ecosystem fund and promising to keep it vendor-agnostic—but make no mistake, they are aggressively positioning workerd and their own developer platform as the default deployment targets for the explosive growth of AI-scaffolded apps.

# Hacker News — 2026-06-07

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Today’s front page is dominated by a collective, existential crisis over the state of software engineering in the era of agentic AI workflows. The community is actively wrestling with a painful paradox: tools like Claude 4.5 and Opus 4.8 are destroying the value of hard-earned domain expertise and debugging intuition, while the underlying economics of these platforms appear to be massively subsidized, burning through cash at unsustainable rates.

Tech Videos — 2026-06-15#

Watch First#

Why MCP and ChatGPT Apps Use Double Iframes — Frédéric Barthelet, Alpic from AI Engineer is the most technically substantive watch of the day because it cuts through generative UI hype to explain the harsh realities of cross-origin browser security, Content Security Policies (CSP), and iframe sandboxing required to safely render third-party Model Context Protocol (MCP) apps.

Hacker News — 2026-06-23#

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Fable 5 wrote a Windows kernel in 38 minutes Anthropic’s restricted cybersecurity model, Fable 5 (a limited version of Mythos), successfully wrote a bootable, NT-compatible Windows kernel in Rust from a blank directory in just 38 minutes. The model correctly implemented the scheduler, memory manager, and trap machinery, while autonomously debugging its own hardware emulation issues. It’s a staggering demonstration of frontier capability that shifts the security conversation from whether an AI can write a Trusted Computing Base (TCB) to the urgent bottleneck of how humans can formally verify code produced at this speed.