# Anthropic — Bringing the cybersecurity capabilities of Claude Mythos 5 to more defenders

- Company: Anthropic (anthropic.com)
- Announced: 2026-08-21
- Category: capability-change
- Coverage: 6 outlets
- Announcement: yes
- Group: covered
- Source: https://claude.com/blog/bringing-claude-mythos-5-to-more-defenders
- Record: https://forck.live/items/7419-bringing-the-cybersecurity-capabilities-of-claude-mythos-5-to-more-defenders
- Subject: Claude
- Models affected: Claude Mythos 5, Claude Mythos Preview, Claude Fable 5, Claude Opus, Opus, Sonnet
- Pricing: scans with Mythos 5 are billed as standard token usage under your existing plan, with no separate add-on

Anthropic announced that Claude Mythos 5 is now available in Claude Security for Claude Enterprise customers, and is being integrated into partners' cyber defense tools. The company also launched a $35 million Defender Advantage Fund for open-source security and is expanding its Cyber Verification Program to include broader dual-use capabilities on Opus and Sonnet, with Mythos-class access to follow.

## Evidence

Verbatim from https://claude.com/blog/bringing-claude-mythos-5-to-more-defenders:

> Claude Mythos 5 is now available in Claude Security , and coming soon to partners' cyber defense tools. We're also launching a $35M fund to help secure open-source software and sharing plans to expand our Cyber Verification Program .

## Around this story

Outlets this record can name and link:

- The Decoder — Anthropic puts its most powerful model Claude Mythos 5 to work for cyber defense: https://the-decoder.com/anthropic-puts-its-most-powerful-model-claude-mythos-5-to-work-for-cyber-defense
- The New Stack — Anthropic brings Mythos 5 to its Claude Security vulnerability scanner: https://thenewstack.io/anthropic-mythos-claude-security
- RuntimeWire — Anthropic puts Claude Security's GitHub scanner behind an Enterprise login: https://runtimewire.com/article/anthropic-claude-security-mythos-5-github-scans
- Unite — Anthropic Deploys Claude Mythos 5 in Security Tools, $35M Open-Source Fund: https://unite.ai/anthropic-deploys-claude-mythos-5-in-security-tools-35m-open-source-fund
- Cyber Security News — Claude Mythos 5 Now Available in Claude Security for Vulnerability Scanning: https://cybersecuritynews.com/mythos-5-claude-security-scanning
- MarkTechPost — Anthropic Brings Claude Mythos 5 to Claude Security: Enterprise Teams Get Frontier Vulnerability Scanning Without Direct Model Access: https://marktechpost.com/2026/08/21/anthropic-brings-claude-mythos-5-to-claude-security

---

Record: https://forck.live/items/7419-bringing-the-cybersecurity-capabilities-of-claude-mythos-5-to-more-defenders
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md