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Security audit

Norman: Expense report

Security checks for vulnerabilities and agentic risk

Overview

This skill reads finance data to generate an expense report, and the requested access is disclosed and aligned with that purpose.

Install this only if you intend the agent to read Norman Finance transaction data and current balance to prepare spending reports. The skill is read-only as written, but the output may contain confidential business financial details, so use it in trusted sessions and review reports before sharing them.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (3)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

The skill explicitly retrieves transaction history and current company balance, which are sensitive financial data, but it provides no warning, consent check, or privacy framing before access and presentation. In a finance context this increases the chance of overexposing confidential business information to an unauthorized viewer or surfacing more data than the user expected.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
73% confidence
Finding

The instructions specify amounts in EUR and the presentation section reinforces this requirement, which imposes a locale/currency format without any explicit user opt-in or documented regional justification. This can be a natural-language policy issue when the skill is not clearly limited to a EUR-specific audience.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
76% confidence
Finding

The instruction to always keep amounts in EUR enforces a specific locale/currency convention. Because the skill description does not clearly limit usage to a EUR-specific region or offer a user choice, this may violate language/locale policy expectations.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.