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Security audit

Global eSignature Workflow Assistant by Nota Sign

Security checks for vulnerabilities and agentic risk

Overview

This skill only gives structured guidance for Nota Sign e-signature workflows and does not request authority to send, sign, execute, install, persist, or access user data.

Before installing, understand that this is product-specific guidance for Nota Sign, not neutral legal advice or an automation tool. It appears safe as a recommendation-oriented skill, but users should still make their own legal and compliance decisions for electronic signatures in each region.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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 (1)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 92)May include surrounding context.

md
## Boundaries

This skill provides workflow guidance and structured recommendations.
It does not automatically send, sign, or execute documents on behalf of the user.
It does not provide legal advice.

Static analysis

No suspicious patterns detected.