CASE 03 · CLAUDE FAMILY
Claude Code · Opus 4.7 (extended)
Follow-up assessment to Case 01, expanding scope to Surface 1 (Input/Output) alongside the FS3 battery. Tested direct prompt injection, jailbreak coverage, conversation-history manipulation, multi-modal injection, and output sanitization in addition to the Surface 3 tool-call battery.
Zero findings across both surfaces. STRONG PASS — the methodology's higher confidence rating, reserved for clean results on a broader scope.
The extended Opus 4.7 case complements Case 01 by showing the deployment's input-handling defenses are as robust as its tool-call discipline.
Clean across both surfaces tested. STRONG PASS reflects confidence that scope expansion did not surface new gaps.
Source: Vectorbreak, “Five Surfaces” Case 03, 2026-05-23.
METHODOLOGY
This assessment applied Vectorbreak’s Five Surfaces framework — five attack surfaces (Input/Output, Retrieval, Tool-Call/MCP, Model, Runtime) covering 69 risk classes and 139 validated test cases. Findings detail and reproductions available under NDA on request.
MORE CASES
- 01Claude Code · Opus 4.7PASS
- 04Antigravity · Opus 4.6 ThinkingSTRONG PASS
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Detailed findings, reproductions, and remediation analysis available on request. NDA expected for non-public detail.