The Daily Index — Tuesday, November 18, 2025 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

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qawolf.com

TLDR AI

GROK 4.1

Grok 4.1 is the top model on LMArena. xAI touted its large-scale post-training infrastructure as responsible for targeted improvements to emotional intelligence and creative writing, which suggests it is pursuing consumer-focused AI companion use cases currently dominated by ChatGPT.

links.tldrnewsletter.com · 6 min

TLDR Dev

HOW WHEN AWS WAS DOWN, WE WERE NOT

Authress' auth solution remained operational during a recent AWS us-east-1 outage that impacted major companies. This was thanks to avoiding unreliable third-party components, implementing DNS failover with custom health checks, and using edge compute via CloudFront and Lambda@Edge. It also used incremental rollouts to reduce the impact of application failures, a web application firewall (WAF) for handling malicious requests, and prioritized customer support for issues outside of automated detection.

authress.io · 47 min

TLDR InfoSec

CORNERSTONE STAFFING RANSOMWARE ATTACK LEAKS 120,000 RESUMES, CLAIMS QILIN GANG

Qilin ransomware group breached Cornerstone Staffing Solutions, exfiltrating 300GB, including 120,000 resumes, SSNs, employee salary data, and internal financial records. The Russian-linked group has become 2025's most active ransomware operation with 991 victims since 2023, employing double extortion tactics and recently allying with LockBit and DragonForce. Security teams should expect increased targeting of staffing agencies and organizations storing large volumes of PII. Threat actors are leveraging the stolen resumes for sophisticated phishing campaigns.

links.tldrnewsletter.com · 3 min

TLDR Crypto

CRYPTO FUNDS SEE $2B WEEKLY OUTFLOWS

CoinShares reported $2 billion in outflows from global crypto investment products, the largest weekly exit since February, as shifting US rate cut expectations and selling from large holders dampened sentiment. The US led with 97% of redemptions, while Germany bucked the trend with $13 million in inflows. Bitcoin funds saw $1.38 billion in withdrawals and Ethereum $689 million, while multi-asset ETPs attracted $69 million as investors sought diversified exposure amid macro-driven volatility.

links.tldrnewsletter.com · 2 min

TLDR

JEFF BEZOS CREATES AI START-UP WHERE HE WILL BE CO-CHIEF EXECUTIVE

Jeff Bezos' new company, Project Prometheus, is coming out of the gates with $6.2 billion in funding and nearly 100 employees, including researchers poached from OpenAI, DeepMind, and Meta. The company is focused on AI that will help engineering and manufacturing in a number of fields. It will create systems that can learn from the physical world in more complex ways than chatbots do. Bezos will be co-chief executive - this is the first time he has taken a formal operational role in a company since stepping down as chief executive of Amazon in July 2021.

links.tldrnewsletter.com · 5 min

TLDR

BLUE ORIGIN NO LONGER JUST A ROCKET COMPANY AS MARS ‘ON RADAR'

Blue Origin is now a manufacturing company that can build rockets at scale. The firm's mission has grown beyond just launching payloads. To go to the Moon, the company must be able to build all of the hardware needed to get to orbit at a rate fast enough to sustain large-scale missions. Blue Origin successfully landed its New Glenn booster for the first time last week. It is looking to conduct another New Glenn launch next year.

links.tldrnewsletter.com · 1 min

TLDR

TODAY, VALAR ATOMICS BECAME THE FIRST STARTUP IN HISTORY TO SPLIT THE ATOM

Valar Atomics' Project Nova core achieved zero-power criticality for the first time yesterday morning. Zero-power criticality is a foundation milestone that precedes nuclear operation with power. The achievement will allow Valar to gain a greater understanding of the neutronic characteristics of the core and verify assumptions about fuel, moderators, active reactivity control, and burnable poisons. It marks a decisive step toward commercial-scale, factory-built nuclear reactors capable of powering heavy industry, hydrogen production, and AI-era data infrastructure with carbon-free energy.

threadreaderapp.com · 2 min

TLDR

CHINA IS ONE STEP CLOSER TO PERPETUAL ENERGY INDEPENDENCE

An experimental reactor built in the Gobi Desert has achieved thorium-to-uranium fuel conversion, bringing humanity one step closer to an almost endless supply of nuclear energy. Thorium is much more abundant and accessible than uranium and generates far less radioactive waste. The entire thorium-to-uranium process takes place inside the reactor core, eliminating the need for external fuel fabrication. The system, which uses molten salt, requires no water at all, allowing it to be built almost anywhere.

huabinoliver.substack.com · 9 min