# Anthropic Says It Disrupted Claude Misuse Across Seven Harm Areas, Including a Russia-Linked Espionage Campaign

The report covers December 2025 to August 2026 and describes attacks that ran inside agent frameworks, plus five blocked attempts to use Claude for work supporting biological weapons.

- Published: 2026-09-20T06:20:15.045Z
- Canonical: https://polylog.news/ai/2026-09-20/anthropic-says-it-disrupted-claude-misuse-across-seven-harm
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Anthropic News](https://www.anthropic.com/threat-intelligence-report-september-2026), [Anthropic Research — Frontier Red Team](https://www.anthropic.com/research/team/frontier-red-team), [Daniel Miessler](https://danielmiessler.com/blog/anthropic-misuse-report-september-2026)

Anthropic published its most detailed threat intelligence report to date, covering activity its threat team identified and disrupted between December 2025 and August 2026. The report groups cases into seven harm areas: cyber operations, inf…

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