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How to — tell if the person on the video call is real

The Everyday

How to — tell if the person on the video call is real

You will finish this with a rule you can run on any video call in under a minute: which requests must be verified, what to ask on the spot, where to confirm them — so a face on a screen never carries a payment or a password by itself. That rule is now necessary because your eyes have lost. Tavus, a video-conversation startup, ran a one-minute call study with its Griffin model and reports that 48% of participants believed they had been talking to a real person; its previous systems topped out a

AI-generated CSAM in H1 2026 topped all of 2025

The Guardrails

AI-generated CSAM in H1 2026 topped all of 2025

The safety data and the identity-verification push are answering the same question from opposite ends: how do you tell real people from generated ones? Three stories worth your midday. AI-generated child sexual abuse material is compounding faster than any detection number can normalize it. The Internet Watch Foundation assessed 6,310 AI-generated images that meet the legal definition of CSAM in the first six months of 2026 — about 40% more than the 4,512 it assessed in all of 2025, and that

Deep Dive — A diary entry in Claude became a felony charge

The Guardrails

Deep Dive — A diary entry in Claude became a felony charge

At 5:10 a.m. on September 26, a user identified in the arrest report as Carli typed into Claude: "I'm going to shoot up the sheriff's right the [expletive] now." The Lee County Sheriff's Office says the platform's safety monitoring caught the phrase, a human review team read the conversation and judged it a credible threat, and the reviewer handed the statements to law enforcement. Deputies identified Carli as 30-year-old Carli Michelle Heller, drove to her home in Bonita Springs, Florida, and d

Schneider Electric buys PTC for $22.6B to expand into AI

The Arena

Schneider Electric buys PTC for $22.6B to expand into AI

Industrial automation just wrote the biggest AI check of the day — and a public benchmark is quietly deflating one of the guardrail market's hottest pitches. Schneider Electric has agreed to buy PTC for about $22.6 billion in cash, its largest acquisition ever and an explicit bet on turning industrial software into an AI business. The French automation giant will pay $205 per share — a 42.3% premium to the last close, 46.1% over the 30-day average — with the deal expected to close in the third

AI 101 — What is prompt engineering?

The Stack

AI 101 — What is prompt engineering?

Prompt engineering is the practice of writing instructions for an AI model so it gives you what you actually wanted — from a one-line question in a chat box to the multi-paragraph specifications companies embed in their products. "Prompt" is just the text you send the model; "engineering" is the unglamorous work of making that text specific enough to work. Why it matters right now. Prompting is still how almost everyone touches AI, and the craft keeps getting documented rather than disappearin

Claude reported a user's diary entry to police; she faces a felony

The Guardrails

Claude reported a user's diary entry to police; she faces a felony

Anthropic's human reviewers read a private Claude conversation the way a moderator reads a flagged post — and this time the result was a second-degree felony charge in Florida. Carli Michelle Heller, 30, of Bonita Springs used Claude like a diary; on September 26 she wrote that she would "shoot up" the Lee County Sheriff's Office, the entry was escalated to a human reviewer who judged it a credible threat, and that reviewer reported it to law enforcement. Deputies identified her, visited her h

Today in AI — October 5, 2026

The Arena

Today in AI — October 5, 2026

A quiet news day with the scaffolding on full display: nobody shipped a frontier model, but the machinery around them — disk drives, sovereign floats, bond syndicates, age checks and interest rates — all moved at once. Models & Research * A streaming-video agent that decides what to remember topped Hugging Face's daily papers. OneStreamer, from a Nanjing University team, folds perception, memory and proactive response into a single loop: it holds on to observations before it knows whether

AI 101 — What is vibe coding?

The Everyday

AI 101 — What is vibe coding?

Vibe coding is writing software by describing what you want in plain language and letting an AI write the code — while you judge the result by whether it works, not by reading every line. Andrej Karpathy, co-founder of OpenAI, named it in a February 2025 post; by November, Collins Dictionary had named "vibe coding" its word of the year for 2025. Why it matters right now. Code is the one thing AI does that people actually depend on, and the numbers show it: Stack Overflow's 2025 Developer Surve

Reflection's open-weight answer to DeepSeek and Qwen

The Frontier

Reflection's open-weight answer to DeepSeek and Qwen

An Nvidia-backed startup run by two DeepMind refugees is about to test whether America can finally ship a downloadable model that holds up against China's — and the test matters more as a political artifact than as a benchmark entry. Axios reported Sunday that Reflection's first open-weight model is set to arrive soon, with other Western open-weight releases expected behind it this month. A Reflection spokesperson declined to comment, and no model name, license, parameter count or score has surf

Micron says memory gets much tighter in 2027 and 2028

The Arena

Micron says memory gets much tighter in 2027 and 2028

The squeeze that drove this year's AI buildout isn't easing — Micron's CEO says the next two years get worse. Plus a US open-weight challenger prepares its first release, and India debates whether to write its own AI rules. Memory supply will be "only getting tighter" through 2028 — and most of next year is already sold. On its fiscal Q4 call, CEO Sanjay Mehrotra said Micron sees demand exceeding supply in calendar 2027 and 2028, with greater tightness than in 2026, and that the company has no

Open Source Radar — October 5: Skill stacks for every harness

The Stack

Open Source Radar — October 5: Skill stacks for every harness

The trending board this weekend is less about new frameworks and more about portable taste: skill packs and workflows built in one agent harness, then ported everywhere else. Four fresh picks, all verified at the source. gstack (TypeScript, 135,000+ stars) is YC president Garry Tan's Claude Code setup, opened up: 23 opinionated tools that play CEO, designer, engineering manager, release manager and QA. The repo sits at the top of daily trending, and the appeal is obvious — instead of writing y

OpenAI's Codex lead pledges 28 days of daily fixes or full resets

The Arena

OpenAI's Codex lead pledges 28 days of daily fixes or full resets

A quiet Sunday in AI, loud commitments instead of launches: OpenAI put a number on its shipping cadence, Axios hears a US open-weight challenger is days away, and Muse's leaked prompt keeps supplying uncomfortable sentences. OpenAI's Codex lead has promised 28 consecutive days of either a visible improvement or a full usage reset. Tibo — Thibault Sottiaux, who leads Codex and ChatGPT work at OpenAI — posted the commitment Saturday night: "Over the next 28 days, each day we'll either ship one

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