# Mythos reportedly discovered thousands of software flaws across every major operating system and browser.

*genai · news · 2026-05-06 · CNA*

## Key points

- Anthropic's Claude Mythos reportedly surfaced more zero-day vulnerabilities in days than adversaries did in a decade.
- Mythos discovered thousands of unknown software flaws across all major operating systems and browsers, some decades old.
- Unauthorized users accessed Mythos on launch day via a third-party vendor's vulnerability, despite strict controls.
- Singapore's Cyber Security Agency urged Critical Information Infrastructure boards to reassess cybersecurity posture due to frontier AI.
- Industry data shows only 75 to 90 zero-days exploited annually, versus thousands allegedly found by Mythos.

**Companies:** Google, Anthropic
**Countries:** Singapore, United States

[Read the full story on CNA](https://www.channelnewsasia.com/commentary/ai-anthropic-mythos-threat-cybersecurity-singapore-csa-6103386)

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Canonical: https://newsio.io/n/56989aab-6410-41ce-b032-04df0f0d183d/mythos-reportedly-discovered-thousands-of-software-flaws-across-every-major-oper
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