The Singularity
Ledger

INTELLIGENCE

The labs are building things they're afraid to ship, and the documents are starting to leak.

Saturday, March 28, 2026

Leaked Anthropic Documents Reveal 'Claude Mythos' — a Model the Company Says Poses 'Unprecedented Cybersecurity Risks'

Internal documents from Anthropic leaked online describe a new model called Claude Mythos that is reportedly far more capable than the current Opus line and can rapidly discover and exploit software vulnerabilities at a level the company's own safety team flagged as a step change in risk.

CLAUDE.md: The Deceptively Simple File That Gives AI Coding Agents Persistent Memory

The creator of Claude Code has revealed how a single markdown file in a project's root directory — accumulating lessons, conventions, and past mistakes — dramatically improves agent reliability across sessions. Developers are calling it the most underrated technique in agentic coding.

SUBSCRIBERSREAD MORE

Get The Singularity Ledger

Daily AI news in your inbox. Free, no spam.

Questions? hello@thesingularityledger.com

Get this briefing every morningFree daily AI

The Singularity
Ledger

Leaked Anthropic Documents Reveal 'Claude Mythos' — a Model the Company Says Poses 'Unprecedented Cybersecurity Risks'

CLAUDE.md: The Deceptively Simple File That Gives AI Coding Agents Persistent Memory

OpenAI Ships a Voice Agent That Books Doctor's Appointments — and It Actually Works

Claude Cowork Connects to Live Google Ads Data — and Marketers Are Losing Their Minds

New Persuasion Benchmark Pits LLMs Against Each Other — Grok Is the Hardest to Sway

California's AI Safety Law Puts Pressure on Federal Regulators

Northwestern's Modular Robots Use AI to Adapt to Damage Mid-Mission

Google Gemini Lets Users Import Chat History from ChatGPT and Claude

Gemini CLI Adds Vim Mode and Git Worktree Support in v0.35.2

OpenAI Expands Codex with Plugin Ecosystem and Workflow Templates

UK Global Talent Visa Adds AI/ML Roles as Exceptional Talent Category