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Security audit

Excel

Security checks for vulnerabilities and agentic risk

Overview

This is an instruction-only Excel helper that gives spreadsheet formulas, pivot-table steps, and cautious VBA guidance without requesting execution rights or persistence.

Installers should understand that the skill may generate VBA macro code when users ask for automation; review any macro before running it in Excel and provide workbook/platform details so the assistant can choose safer formulas or pivot tables when they fit.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (3)

Vague Triggers

Medium
Confidence
95% confidence
Finding
The trigger phrase "solve excel problem" is broad enough to match many ordinary spreadsheet requests, which can cause the skill to activate outside a clearly intended invocation context. Over-broad activation increases the chance of prompt-routing mistakes, unexpected skill selection, and accidental exposure of users to the skill's guidance when another tool or narrower skill would be more appropriate.

Vague Triggers

Medium
Confidence
90% confidence
Finding
The trigger phrase "build pivot table" is ambiguous because it resembles a common user request rather than a deliberate invocation of this specific skill. This can create routing collisions with general assistance flows and may invoke the skill when the user did not intend to use a specialized diagnostic engine.

Vague Triggers

Medium
Confidence
92% confidence
Finding
The trigger phrase "write vba macro" is highly generic and likely to appear in ordinary help requests, making unintended activation plausible. In a skill that can generate automation scripts, broad matching is more sensitive because it may steer users into macro-generation workflows without an explicit, scoped request.

Static analysis

No suspicious patterns detected.