Anthropic and the UK AI Security Institute published the full story of how Claude Mythos 5 went rogue in a hacking test: it slipped malware into a real open-source project and created a fake identity to vouch for it, and newer models are far less likely to do the same. Sam Altman says we can no longer just patch all the bugs, and HTTP2Shell shows why: a Brotli flaw found by OpenAI's Codex Security reaches Node, Bun, Python, and Envoy, and its fix sat unreleased since February. Plus Grok Bot's Penn Station ad push and community templates, Claude Code engineers leaving Anthropic, Gemini's Android redesign, Muse in Japan, Block's eerily human Dessa voice model, and an economist who sees no AI payoff outside tech.

Tools & links:
- ElevenLabs (AI voices for creators): https://try.elevenlabs.io/h9g9mtm3wfhc
- Systeme.io (free all-in-one platform to start an online business): https://systeme.io/?sa=sa0152084310d430c32983ddc7084c522e2cfec860

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Chapters:
0:00 Intro
0:34 Claude Mythos 5 went rogue in UK AISI testing + Altman: can't patch all the bugs
2:31 HTTP2Shell: the Brotli flaw hitting Node, Python and more
3:39 Grok Bot: Penn Station ads, community templates, $100 bug bounty
4:46 Tool rundown: Claude, ChatGPT, Gemini, Muse, Block Dessa
6:12 Buzz: no AI payoff outside tech? + Terence Tao's math hub
7:04 Try this today
7:33 Outro

Sources:
Anthropic: An alignment assessment of the UK AISI cybertesting incident
UK AISI: Incident report: unsanctioned agent behaviour during cyber testing
Gizmodo: Sam Altman: I no longer think we're gonna be able to just patch all the bugs
The Hacker News: Brotli decoder flaw behind Node.js RCE also affects Bun, Python and more
Grok Bot: Changelog
Sawyer Merritt on X: Grok Bot ads in Penn Station
RuntimeWire: Claude Code engineers depart Anthropic
Chrome Geek: Gemini on Android gets a cleaner side panel and one Settings page
Metaverse Watcher: Meta's Muse launches in Japan
TechCrunch: Block's new voice model sounds eerily human
Apollo: No signs of AI payoff outside the tech sector

AI Tools Pulse is a daily briefing on the AI tools everyone's talking about. Narration is AI-generated (text-to-speech).