Anthropic — Frontier Threats Red Team: spear-phishing scaling study
Date: 2024-08
Affected: Claude; corporate executives
Attack vector: tool-abuse
Category: threat-report
Severity: High

Anthropic's Frontier Threats Red Team documented adversaries using Claude to scale targeted spear-phishing: building personalised lures from public profile data, generating multilingual variants, and A/B testing message variants. Anthropic introduced classifiers and monitoring on the basis of these tests.


Mitigations:

Architectural layers (MAESTRO):