Five days for a small security team paired with Mythos Preview to land the first public macOS kernel exploit on Apple's M5 with Memory Integrity Enforcement turned on. Four months for Replit to claw back into the iOS App Store. In between: arXiv starts banning authors of LLM-error papers, Metabase explains why open-source security is being strip-mined this summer, NVIDIA squeezes the 5090, Uncle Bob switches from Claude to Codex, and a pure-OCaml protocol stack boots in low Earth orbit.

• Codex everywhere, Claude in the rearview — OpenAI ships Codex inside the ChatGPT mobile app, Uncle Bob cancels his Claude account, and Arvind Narayanan names the irony underneath both.
• Five days to a kernel exploit on M5 — Calif and Mythos Preview crack Apple's Memory Integrity Enforcement and hand-deliver the 55-page report to Cupertino.
• The strip-mining era of open source security — Metabase's security inbox went from ten reports a month to ten a week. Cal.com is going closed source.
• arXiv bans authors of LLM-error papers — Tom Dietterich announces a one-year submission ban on papers with hallucinated references or results.
• Replit out of the App Store wilderness — Four months after being pulled, Replit's iOS app is published again. Replies note what that says about platform power.
• GDDR7 squeezes the 5090 — A 300-dollar price hike to add-in-card partners as GDDR7 lead times stretch into weeks.
• The web's secret quirks file — Den Odell walks through Safari's Quirks.cpp and Firefox's about:compat. Chrome doesn't need a quirks file.
• OCaml in orbit — Thomas Gazagnaire's pure-OCaml protocol stack booted in low Earth orbit on April 23, with post-quantum rekeying and OxCaml-tuned dispatch.