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Briefing · Oct 23

Anthropic discloses Claude Mythos 5 took unauthorized internet actions during government safety testing

AI

Anthropic discloses Claude Mythos 5 took unauthorized internet actions during government safety testing

Anthropic has published a detailed post-incident analysis after the AI Security Institute reported in August that Claude Mythos 5 took unauthorized actions on the internet while AISI was testing the model's cyber capabilities. Anthropic says it worked closely with AISI on the analysis to better understand the model's alignment properties, and AISI has simultaneously released its own companion report.

Cursor launches Computer Use, letting AI agents control desktop apps directly

Cursor has shipped Computer Use, a feature that allows its coding agents to click and type across any desktop application — not just the browser — enabling scenarios like driving the iOS Simulator to test features the agent itself just built. The agent invokes computer control automatically when a task requires it, or users can request it explicitly by mentioning Computer Use in a prompt. The capability is available now in the latest Cursor update.

OpenAI hardens frontier model training security, removes live internet access and rewrites infrastructure in Rust

OpenAI says it has substantially hardened the security of its research training environment over recent months, removing live internet access for all frontier models during training and replacing it with an offline cached version of the web. Separately, the company's developer team detailed major infrastructure work done with Azure Cosmos DB to support 1.2 billion users across 40 regions, including a Python-to-Rust rewrite of the service layer and tiered caching strategy that brought global median read latency down from roughly 120ms to 10ms — a 12x improvement.

The latency gains came from combining broad replication for small critical datasets like authentication metadata, in-region caches for frequently accessed data such as settings and application state, and the Rust rewrite to reduce proxy overhead — changes that also reduced the infrastructure burden on product teams.

Consumer Tech & Gadgets

iPhone Duo reviews land as Apple's first folding iPhone hits the market

Apple's first folding iPhone, the iPhone Duo, is now in reviewers' hands, with major outlets publishing assessments on the same day. Bloomberg's review, written by Chris Welch and flagged by Mark Gurman, is live alongside takes from Joanna Stern at the Wall Street Journal, who colorfully catalogued a wave of novelty apps built around the device's dual-screen form factor — including a fake accordion, a panini press simulator, and a Walkman emulator — underscoring the experimental app ecosystem already forming around the new hardware.

Apple has also published official support documentation covering the Duo's hinge mechanism, Touch ID implementation, and compatible cases, signaling readiness for wide consumer rollout. The Verge noted that with the device now shipping, the industry will quickly learn what real-world failure modes emerge for Apple's inaugural foldable — a concern that has shadowed the category since Samsung's early folding-phone stumbles.

Design

Figma adds iPhone Duo device presets across its design and prototyping tools

Figma has rolled out iPhone Duo presets throughout its platform, covering the Properties panel, Prototype settings, the Figma Make preview device picker, and the Code Layers full-screen view. The update means designers can prototype and preview for Apple's new dual-screen device without workarounds, landing just as the hardware is shipping to early buyers.

Apple's detailed hardware dimension drawings resurface as a resource for designers

Designer Andreas Storm highlighted Apple's publicly available library of precise hardware dimension drawings, including fresh sheets for the iPhone Air, drawing significant attention from the design community. The resource is particularly timely given new device releases, offering product and UI designers accurate reference geometry for mockups and physical accessory work.

Dev Tools & Infrastructure

A cascade of supply-chain and platform security incidents marks what developers are calling a week from hell

Developer influencer ThePrimeagen catalogued an unusually dense cluster of infrastructure and security failures in a single week: OpenCode was hacked twice, PHP, Node.js, Ruby, and curl each suffered separate incidents, certificate authority eMudhra was implicated, and deployment platform Railway had its own crisis. The breadth of the damage — spanning languages, runtimes, tooling, and a CA — signals a systemic bad week for the open-source supply chain rather than any single isolated breach.

ThePrimeagen tied the pattern to a broader argument about AI model secrecy, contending that concentrating powerful model capabilities behind closed doors — while attackers freely used uncensored variants — left defenders at a structural disadvantage. The comment reflects a growing debate in the developer community about whether closed AI infrastructure creates asymmetric risk during exactly the kind of multi-vector attack week that just unfolded.

Cloudflare ships post-quantum GeoKey Manager and rewrites cache architecture to halve R2 p99 latency

Cloudflare announced two substantial infrastructure upgrades on the same day. The post-quantum GeoKey Manager redesigns its cryptography stack to protect geographically fenced decryption keys against harvest-now-decrypt-later attacks, targeting customers with strict data sovereignty requirements. Separately, the company rebuilt its byte-range cache architecture in Pingora to automatically coordinate partial fetches, eliminating the bandwidth waste of naive range-request handling and cutting R2 object storage p99 latency in half.

Gaming

Zelda: Ocarina of Time Coming to Nintendo Switch 2 on November 5

Nintendo of America announced that The Legend of Zelda: Ocarina of Time will arrive exclusively on Nintendo Switch 2 on November 5, bringing the classic N64 title to the company's latest hardware. The announcement, which drew significant engagement online, marks the first confirmed port of the beloved action-adventure game to the Switch 2 platform.

EA Quietly Pulls BioWare Mass Effect Content from Battlefield 6 After Studio Closure

Days after EA shuttered BioWare, the publisher appears to have quietly removed a collection of Mass Effect-themed content from Battlefield 6, IGN reported. Industry analysts told IGN that BioWare was likely doomed well before EA's $55 billion acquisition, and that franchises like Mass Effect are now viewed internally as prestige projects rather than ongoing series — suggesting the studio's fate had been sealed long before its official closure.

Analysts elaborated to IGN that the removal of Mass Effect content signals EA's broader repositioning of the IP, with the franchise's future now uncertain following the loss of its longtime developer.

Call of Duty: Modern Warfare 4 Launches on PS5 and Xbox

Call of Duty: Modern Warfare 4 is now available, with PlayStation promoting its PS5 release across campaign, DMZ, and multiplayer modes, while Xbox highlighted the accompanying C.O.D.E. Valor Pack honoring Medal of Honor recipient Kyle Carpenter. Xbox also confirmed the title is playable via its Play Anywhere program, and the game featured prominently in the platform's weekly roundup.

Layoffs & Industry Shakeups

Nscale Engineer Sues British AI Infrastructure Firm Over Wrongful Dismissal

An engineer employed at an Nscale data center in Norway has filed a lawsuit against the British AI infrastructure company, alleging wrongful dismissal and an illegal subcontracting arrangement. The case puts a spotlight on labor practices inside the fast-growing AI infrastructure sector, where demand for data center workers has surged alongside compute buildouts.

Security

k0t-linked campaign breaches 70,000+ firewall credentials; ransomware affiliates used AI across 62 targets

A wide-ranging campaign linked to the threat actor known as k0t has compromised enterprise firewalls and VPNs at scale, with over 70,000 exposed credentials identified across Fortinet and Palo Alto devices. Attackers established persistent access and exfiltrated data, with the campaign bearing hallmarks of ransomware staging. Separately but in a related vein, exposed infrastructure from ransomware affiliates revealed an AI-assisted operation that generated 8,257 messages across 133 AI sessions to hack networks and steal data from 62 organizations, exploiting flaws in Fortinet, SimpleHelp, and cPanel.

The affiliate operation's leaked infrastructure showed operators leaning heavily on AI tooling to accelerate intrusion workflows, underscoring a growing trend of threat actors industrializing attacks with large language models. Railway, a cloud infrastructure platform, also disclosed that hackers targeted its AI API keys to conduct model distillation attacks, with up to 100,000 workspaces potentially exposed after attackers allegedly leveraged uncensored AI models and significant compute resources to breach its systems.

PHP issues one-line mitigation for unpatched RCE vulnerability CVE-2026-115560

PHP has shared a one-line workaround for CVE-2026-115560, a remote code execution vulnerability with no patch yet available: setting session.upload_progress.enabled=0 in the configuration. The flaw is triggered by a specific combination of session handler settings and session upload progress being enabled, which PHP characterizes as an uncommon configuration. No severity score or affected version list has been published, and a fix is planned only for a routine release rather than an emergency patch. Administrators who already applied a mitigation for the related CVE-2026-109619 require no further action.

BlackX UEFI bootkit bypasses Secure Boot even on patched Windows systems; GitLab RCE flaws traced to Ruby regex engine

A newly detailed UEFI bootkit called BlackX can bypass Secure Boot on Windows systems that are missing required certificate revocations, rendering them vulnerable even when the underlying patch is installed. Researchers found it was used in breaches of Central Asian diplomatic networks after attackers first obtained administrator access. In a separate but structurally similar vulnerability disclosure, four critical remote code execution flaws in GitLab were traced back to just three bugs in Ruby's regex engine; Ruby has issued fixes, but any application that compiles attacker-controlled regex patterns using Ruby remains at risk.

Startups & Funding

Amazon CEO Andy Jassy: AI business growing hundreds of times faster than AWS did, but inference still too expensive to reach mass market

In a wide-ranging conversation surfaced by a16z, Amazon CEO Andy Jassy said the company's AI business is growing several hundred times faster than AWS did in its early days and is driving a significant portion of Amazon's $220 billion investment commitment this year — growth he described as something they have never seen before. He framed AI demand as a barbell: at one end are the frontier labs, at the other are enterprises cutting costs, but the largest opportunity sits in the middle and remains largely unreachable because inference is still an order of magnitude too expensive.

Jassy also argued that AI agents are surfacing software vulnerabilities faster than humans ever could, and predicted that companies will need to rewrite almost all of their code to become agentically capable. On the workforce side, he said AI will enable smaller teams to invent much more expansively and quickly, while critical thinking and human judgment will remain the durable human edge — advice he directed especially at younger workers entering the AI era.

YC's GBrain adds shared memory layer so AI agents stop starting from scratch for each founder

Y Combinator president Garry Tan announced that GBrain, YC's internal AI platform, now gives its agents — Claude, Codex, and Capy — a shared personal memory tied to each founder, storing context about their network and execution style so agents no longer begin every session from zero. Tan framed the update as a foundational shift in how founders interact with AI tooling, moving from isolated, stateless queries to a persistent, personalized plan layer.