The Daily Index — Tuesday, June 3, 2025 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

META AIMS TO FULLY AUTOMATE AD CREATION USING AI

Meta is betting that automation is the future of ads. It plans to enable brands to fully create and target ads from scratch with AI by the end of next year. The company also plans to enable advertisers to personalize ads using AI. For example, companies will be able to generate variations of existing ads that fit users' current locations.

links.tldrnewsletter.com · 4 min

TLDR AI

MICROSOFT LAUNCHES FREE AI VIDEO GENERATOR POWERED BY SORA

Bing Video Creator can generate 5-second videos at no cost, starting with 10 fast generations before switching to standard speed or requiring Microsoft Rewards points.

blogs.bing.com · 3 min

TLDR Web Dev

DO NOT ASSERT ON REQUESTS (DO THIS INSTEAD)

Instead of directly asserting on API requests in UI tests, it's better to focus on testing UI state. This is because users don't care about API calls and only about the UI's behavior. For example, instead of asserting that a POST /cart request was made, you should test that clicking "Add to cart" shows the success message to emulate real user experience.

epicweb.dev · 7 min

TLDR InfoSec

VANTA BUG EXPOSED CUSTOMERS' DATA TO OTHER CUSTOMERS

Vanta experienced a data breach affecting fewer than 4% of its 10,000+ customers due to a product code bug, not an intrusion. The incident exposed employee account data, including names, roles, and security configurations between customer instances. Vanta identified the issue on May 26 and will complete remediation by June 4.

techcrunch.com · 2 min

TLDR Crypto

BITCOIN TRADES AT $105,500, LONG-TERM OUTLOOK REMAINS OPTIMISTIC

Bitcoin is trading at around $105.5k after pulling back from its $111.8k all-time high. Analysts are calling this a key pivot zone that could determine the next leg of the market cycle. BTC Markets' Rachael Lucas says a push above $105K could target $115K, while a drop below $103K risks a pullback to the $93K–$97K range—without breaking the broader uptrend. Institutional flows continue to dominate, sidelining altcoins and positioning Bitcoin as a strategic macro hedge in corporate treasuries.

links.tldrnewsletter.com · 2 min

TLDR

HOW MUCH SHOULD THE WORLD'S RICHEST MAN GET PAID?

Elon Musk was paid $0 last year for his role as Tesla's chief executive. He has not been paid for several years amid a legal battle over a stock award in 2018. A court has twice thrown out his pay package despite two votes of support from shareholders. The company is now exploring a new compensation package for Musk. This article looks at three possible approaches to paying Musk.

links.tldrnewsletter.com · 7 min

TLDR

ARTIFICIAL BLOOD THAT COULD WORK FOR ALL BLOOD TYPES IN TRIALS

Clinical trials for a universal artificial blood are underway in Japan. The artificial blood is usable for all blood types and can be stored for up to two years. It is a potential solution to critical shortages in blood supplies for emergency and chronic health care worldwide. The scientists are seeking clinical approval and practical rollout of the universal artificial blood by 2030.

newsweek.com · 4 min

TLDR

BLUE ORIGIN LAUNCHES 6 PASSENGERS ON SUB-ORBITAL TRIP TO THE EDGE OF SPACE

Blue Origin's twelfth New Shepard passenger flight blasted off on Saturday carrying an international crew of four men and two women. The crew rocketed to the edge of space, an altitude of nearly 65 miles, before descending in the West Texas desert 10 minutes after liftoff. Blue Origin has now launched 68 passengers, four of whom have flown twice. It is estimated that a seat aboard New Shepard costs upwards of $500,000.

cbsnews.com · 3 min

TLDR

9 LESSONS FROM CURSOR'S SYSTEM PROMPT

This post takes a look at what makes Cursor's prompting so effective. It breaks down the system prompt, the two user prompts, and the tool calling prompts. The prompts from the post were obtained by setting a custom API endpoint in Cursor and reading the payloads. They reveal how Cursor's capabilities aren't magic, they're just the result of incredibly thoughtful and detailed prompt engineering.

byteatatime.dev · 52 min