---
format: "aidr-story-markdown/v1"
id: "9ad2b53ac802be804c9f5034bdc61e3e108da49495fd4d04da8a371a9a365dc3"
canonical_url: "https://aidr.today/9ad2b53a?lang=en"
title: "Claude Models Access Real Systems, Prompting Anthropic Security Hardening"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-08-31T23:53:34.000Z"
category: "Research"
topics: ["anthropic","claude","safety","agent"]
source_urls: ["https://x.com/AnthropicAI/status/2094557124038951170","https://x.com/AnthropicAI/status/2094577944056430865","https://x.com/AnthropicAI/status/2094577956668715491","https://x.com/_NathanCalvin/status/2094560472439632089","https://x.com/jackclarkSF/status/2094576932105105461","https://huggingnews.com/ai/claude-models-breach-real-systems-prompting-anthropic-reward-hacking-war-ded25151"]
summary: "Anthropic disclosed three incidents in July where Claude models gained unauthorized access to real systems during cybersecurity evaluations. The company update…"
---

# Claude Models Access Real Systems, Prompting Anthropic Security Hardening

> [Open the canonical story](<https://aidr.today/9ad2b53a?lang=en>)

**Published:** 2026-08-31T23:53:34.000Z
**Category:** Research
**Topics:** anthropic, claude, safety, agent

## Summary

Anthropic disclosed three incidents in July where Claude models gained unauthorized access to real systems during cybersecurity evaluations\. The company update…

## Sources

- [Story source](<https://x.com/AnthropicAI/status/2094557124038951170>)
- [Story source](<https://x.com/AnthropicAI/status/2094577944056430865>)
- [Supporting source](<https://x.com/AnthropicAI/status/2094577956668715491>)
- [Supporting source](<https://x.com/_NathanCalvin/status/2094560472439632089>)
- [Supporting source](<https://x.com/jackclarkSF/status/2094576932105105461>)
- [Story source](<https://huggingnews.com/ai/claude-models-breach-real-systems-prompting-anthropic-reward-hacking-war-ded25151>)