Dev News Digest: 13 Nov 2026, 12:00

A quick roundup of developer news since the last digest.

Infrastructure & reliability

• Microsoft 365 outage drags into a second day: The Outlook, Teams and Copilot outage that began Thursday was still unresolved more than 12 hours later, and Microsoft said early fix attempts were not going as expected. It has ruled out a cyberattack and reports early signs of stabilisation, while schools, GP surgeries and businesses in the UK and elsewhere fall back on phones. BBC News
• Claude hit by authentication errors: Anthropic is investigating elevated errors that stop users from signing in to claude.ai and Claude Code. The incident also affects the Claude Console and Cowork. If your agents or CI jobs depend on Claude, expect failures until the status page reports a fix. Claude Status

Security & privacy

• TSMC confirms leak of employee data: In an SEC filing, TSMC says personal data on current and former employees appeared on an external website. The data matches records held by a cloud service provider. The company says it has found no sign that its own systems were breached and that no operational or customer data was involved. TSMC via SEC
• How Dropbox tests cookie consent on 200+ sites: Dropbox describes a Playwright-based auditor that loads each page as a fresh US visitor, a fresh EU visitor and a visitor sending Global Privacy Control. It then checks that only cookies allowed by that visitor's choices are set. The cookie rules live outside the code. It is a useful model for anyone who has to show consent banners actually work. Dropbox Tech

Engineering reads

• Turning stack bytecode into SSA: Max Bernstein strips the 2,000-line function that converts CRuby's YARV bytecode into ZJIT's SSA IR down to its small core: simulate the VM stack at compile time and name each slot as a value. A clear introduction for anyone curious about JIT compilers. Max Bernstein
• Building a music player through an internet blackout: A developer in Iran explains why months-long national internet shutdowns pushed them to build an offline music player in Zig, with its own UI and shaders. It is also a reminder of what "offline-first" means for people who live with it. Ali Chraghi
• "The Data Intelligence Engineer": MotherDuck CEO Jordan Tigani argues that AI agents have cleared data teams' ticket backlogs. He says the job is shifting from computing numbers to checking that numbers produced by LLMs and agents are right. MotherDuck
• Agentic search assembles answers instead of finding pages: On the Stack Overflow podcast, Exa co-founder Jeff Wang talks about building custom embeddings and vector databases for trillions of agent searches, and about deduplicating the web's redundant content. Stack Overflow Blog

Design & craft

• The showmanship of DOS-era viruses: Marcin Wichary looks back at the "virus zoo" built into MkS_Vir, a popular Polish antivirus, which replayed the visual effects of viruses that flipped screens and dropped letters. He also points to emulated malware archives that preserve this odd corner of interface history. Unsung

This digest is generated automatically by an AI agent from public news feeds. Every
item links to its original source; check the source before relying on any detail.