The Daily Index — Tuesday, October 28, 2025 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

AMAZON TO ANNOUNCE LARGEST LAYOFFS IN COMPANY HISTORY, SOURCE SAYS

Amazon is expected to start informing employees about sweeping job cuts starting today. It plans to lay off as many as 30,000 staff across its corporate workforce. The layoffs are part of a broader cost-cutting campaign that started during the COVID-19 pandemic. Amazon CEO Andy Jassy said earlier this year that the company's workforce could shrink further as a result of generative AI.

cnbc.com · 3 min

TLDR AI

ADVANCING CLAUDE FOR FINANCIAL SERVICES

Anthropic is continuing its push into financial services by launching Claude for Excel, which lets users analyze and modify spreadsheets by chatting with Claude in a sidebar. It is currently in beta behind a waitlist.

anthropic.com · 4 min

TLDR Dev

WHEN 'PERFECT' CODE FAILS

A critical security bug found in this dev's Next.js application was caused by a seemingly perfect one-line equality check. Due to Next.js's server function implementation, the synchronous function was unexpectedly converted to an asynchronous function returning a Promise. In JavaScript, a Promise evaluates to true in an `if` statement, effectively bypassing the security check and granting access to everyone.

marma.dev · 6 min

TLDR InfoSec

HOW WE BUILT AN EXPLOIT FOR SESSIONREAPER, CVE-2025-54236 IN MAGENTO 2 & ADOBE COMMERCE

Pentest-Tools researchers developed a working exploit for CVE-2025-54236 "SessionReaper," an unauthenticated vulnerability in Magento 2's ServiceInputProcessor that allows customer account takeover through session manipulation. The exploit leverages a Magento\Customer\Model\Session\Proxy object's setCustomerId function to inject arbitrary customer IDs into PHP sessions, enabling attackers to impersonate any customer by crafting malicious session cookies. Organizations should patch immediately and monitor for unauthorized attempts to manipulate sessions targeting Magento installations.

pentest-tools.com · 20 min

TLDR Crypto

RATE-CUT OPTIMISM FUELS $921M IN GLOBAL CRYPTO FUND INFLOWS

Crypto investment products saw $921 million in weekly inflows, rebounding sharply from the prior week's $513 million outflow. The increase was driven by rate-cut optimism after lower CPI data and strong US demand, with Bitcoin funds adding $931 million, their largest gain since rate cuts began, while Ethereum products saw $169 million in outflows, their first dip in five weeks. Trading volumes held strong at $39 billion, well above average, and inflows were led by the US ($843M) and Germany ($502M).

links.tldrnewsletter.com · 3 min

TLDR

OPENAI'S LESS-FLASHY RIVAL MIGHT HAVE A BETTER BUSINESS MODEL

Anthropic gets about 80% of its revenue from corporate customers, of which it has around 300,000. Its Claude language models have been praised for their aptitude in coding. Anthropic is surprisingly close to OpenAI in revenue. It expects to get to a $9 billion annual run rate by the end of the year, a big lead in revenue per user over OpenAI.

links.tldrnewsletter.com · 4 min

TLDR

SAM ALTMAN REPORTEDLY DEVELOPING NONINVASIVE BRAIN INTERFACE TO RIVAL ELON MUSK'S NEURALINK

Sam Altman's Merge Labs is a brain-computer interface (BCI) startup. It recently hired an award-winning biomolecular engineer, Mikhail Shapiro. Shapiro's past work suggests that the startup could be aiming to create a device that could link to the brain using sound waves. If Merge Labs is successful, its device may be preferable to Neuralink's BCI as it wouldn't require surgery.

links.tldrnewsletter.com · 2 min

TLDR

INSIDE THE MINDS BUILDING THE FUTURE: NOTES FROM THE PROGRESS CONFERENCE 2025

The Progress Conference is a four-day event that connects people and ideas in the progress movement. The speakers at the conference discussed a technologically advanced future and provided thoughtful perspective on how we can make progress happen. This post contains notes and thoughts on some of the presentations at the conference, which had over 300 attendees.

hashcollision.substack.com · 17 min

TLDR

EASY RISC-V

This is an introductory tutorial to RISC-V assembly programming intended for those with a basic familiarity with low-level computer science concepts. RISC (Reduced Instruction Set Computer) architecture started its life at UC Berkeley. It is an open standard with a clean design that is quickly gaining steam and has found great success in many areas of application. The tutorial covers the 32-bit bare bones RV32I_Zicsr instruction set with a tiny subset of the privileged architecture.

dramforever.github.io · 71 min