The Daily Index — Wednesday, August 13, 2025 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

meet enterprise demands for fine-grained access.

WorkOS RBAC is the fastest way to implement structured, scalable permissions. [6] Define roles, group permissions, and update access for entire user groups in a single step. With developer-friendly APIs, a powerful dashboard, and native integrations for SSO and Directory Sync, WorkOS gives you enterprise-grade access control out of the box.

workos.com

TLDR AI

PERPLEXITY BIDS $34.5B FOR CHROME

Perplexity made an unsolicited $34.5B cash offer to acquire Chrome, pledging to keep Chromium open source, invest $3B in the project, and retain Google as the default search.

finance.yahoo.com · 4 min

TLDR Web Dev

BUILDING A WEB SEARCH ENGINE FROM SCRATCH IN TWO MONTHS WITH 3 BILLION NEURAL EMBEDDINGS

This article goes over how to build a web search engine from scratch. It covers how to generate 3 billion SBERT embeddings using 200 GPUs, crawl and index 280 million pages, optimize query latency, and implement a service mesh. The project involved developing custom solutions for crawling, data storage with RocksDB, a sharded HNSW index for vector search, and AI-powered features like quick answers and result summarization.

blog.wilsonl.in · 34 min

TLDR InfoSec

NETHERLANDS: CITRIX NETSCALER FLAW CVE-2025-6543 EXPLOITED TO BREACH ORGS

The Netherlands' National Cyber Security Centre (NCSC) warns that a critical Citrix NetScaler vulnerability (CVE-2025-6543) has been actively exploited to breach critical organizations in the country. The flaw allows attackers to compromise NetScaler appliances and gain unauthorized access to organizational networks. Organizations using Citrix NetScaler are urged to apply patches immediately to prevent exploitation.

bleepingcomputer.com · 2 min

TLDR Crypto

SPOT ETH ETFS TOP $1B IN DAILY NET INFLOWS FOR FIRST TIME

U.S. spot Ethereum ETFs recorded over $1.02 billion in daily net inflows on Monday, their highest single-day total to date, led by BlackRock's ETHA and Fidelity's FETH. The milestone pushes total inflows since May to $10.83 billion, signaling rising institutional conviction in Ethereum's role as a foundational asset for DeFi and Web3. Ethereum's price has increased 45% over the past month, further fueled by growing TradFi treasury allocations and favorable regulatory momentum.

links.tldrnewsletter.com · 2 min

TLDR

PERPLEXITY MAKES LONGSHOT $34.5 BILLION OFFER FOR CHROME

AI startup Perplexity has made an offer to purchase Google's Chrome browser for $34.5 billion. The offer is significantly more than Perplexity's own valuation at $18 billion and far below some estimates of Chrome's enterprise value. A US District Judge is currently weighing whether to force Google to sell the browser. Perplexity's offer could be an attempt to signal to the judge that there is an interested buyer should he force a sale.

links.tldrnewsletter.com · 3 min

TLDR

SAM ALTMAN, OPENAI WILL REPORTEDLY BACK A STARTUP THAT TAKES ON MUSK'S NEURALINK

Sam Altman is in the process of co-funding a new brain-computer interface startup called Merge Labs. He is raising funds for it using capital possibly coming largely from OpenAI's ventures team. Merge Labs is expected to be valued at $850 million - OpenAI has not yet committed to the deal, so terms could change. The startup will compete with Elon Musk's Neuralink, which currently has a device in trials for people who suffer from severe paralysis.

techcrunch.com · 2 min

TLDR

SPACEX RIVAL AST SPACEMOBILE PREPARES TO DEPLOY NEARLY FIVE DOZEN SATELLITES

Satellite designer AST SpaceMobile is preparing to deploy 45 to 60 satellites to power cellular-based broadband networks to compete with SpaceX. It plans to deploy its satellites into orbit by 2026 and support continuous service in the US, Europe, Japan, and other strategic markets. AST SpaceMobile plans to launch satellites every one to two months to reach its goal. SpaceX currently has more than 8,000 satellites in orbit.

cnbc.com · 2 min

TLDR

THE EXPANDING WORLD OF GENETIC TESTING FOR YOUR EMBRYOS

Preimplantation genetic testing (PGT) is testing performed on embryos before implantation for the purposes of gathering genetic information to guide embryo selection during IVF. It is considered a low-risk procedure when performed by experienced professionals. This article looks at what can and can't be learned from the genetic testing of embryos and the different types of testing available today. PGT results should only be seen as screening and not a perfect diagnosis. While it is powerful, it is only useful if it is understood and applied properly.

jordanagraifman.substack.com · 5 min