September 28, 2026
Today's top tech stories, deduped across the newsletters I read and briefly summarized. Click a source to open the original article.
AI
Anthropic launches Claude Marketplace with over 2,000 plugins
Anthropic has launched a Claude Marketplace bringing together more than 2,000 plugins, connectors, and agents in one place. The marketplace makes it easier to extend Claude with third-party tools.
OpenAI is testing an always-on assistant called "o"
OpenAI is testing a new always-on assistant called "o" that could handle tasks such as email. References to the unannounced feature briefly appeared on the company's website.
NVIDIA launches DSX MaxLPS for more efficient AI factories
NVIDIA has introduced DSX MaxLPS, technology aimed at maximizing throughput and power efficiency in AI factories. It addresses the problem that data centers are typically overprovisioned for rare peak-power moments, wasting capacity.
Fireworks AI releases the Ember-1 model
Fireworks AI has released Ember-1, a new AI model that drew significant attention on Hacker News, part of the steady stream of new model releases throughout 2026.
Simon Willison recaps a year in LLMs
Simon Willison delivered the closing keynote at the WeAreDevelopers World Congress in San Jose, tying together the year's key LLM trends in chronological order.
Security
Citrix confirms active exploitation of two NetScaler flaws
Citrix has confirmed that two critical NetScaler remote code execution vulnerabilities, tracked as CVE-2026-88771 and CVE-2026-88772, are being actively exploited in attacks. The company has released security updates, and admins are urged to patch immediately.
Cloudflare fixes flaw that leaked data between customers
Cloudflare has fixed a bug in Containers and Sandboxes that allowed customers with a Workers Paid account to recover residual data from other customers' containers on the same physical host.
Dev
Developer warns against tightly coupling Go code to GitHub
A developer argues that Go code shouldn't be tightly coupled to GitHub-specific features, recommending more portable patterns for open-source projects.
Fakecloud offers local AWS emulation for integration tests
Fakecloud is a new local AWS cloud emulator built for integration tests, letting developers test cloud-dependent code without hitting real AWS infrastructure.
The state of SIMD in Rust in 2026
An updated overview covers the state of SIMD (single instruction, multiple data) support in Rust in 2026, and how the language and ecosystem have matured for performance-critical code.
Web
New tool exposes bot replies on Bluesky
Simon Willison built a tool that checks whether Bluesky accounts replying to posts are automated bots, addressing a growing problem with automated replies on social media.
IT
Debate over Amazon S3's pricing flares up again
Simon Willison weighed in on a Hacker News discussion about Amazon S3's evolution, noting that the storage service's pricing has rarely been cut compared with other cloud services.